I used to be an atheist. I used to be non-denominational. I used to be Protestant. Now I’m Catholic.
“Why Catholic?” is very easy, really. “Why Christian?” is much harder. I’m still working on this question but I’ve made some progress.
I’ll start with this really clever thing that i heard somewhere that I repeat to myself sometimes. Christianity is, as far as I know, the only Trinitarian religion. Father, Son, and Holy Spirit. So, God is love, right? This is established. In order to be love, He must be every bit of love. With the three Persons, the love is in a complete cycle. The Father, who loves. The Son, who is loved. And the Holy Spirit, who is the love that flows between. An endless cycle forever.
So (quick catechism), first we have the Father, who is the creator of everything, whether directly or indirectly. The Father is infinite, no beginning and no end, and omnipotent. Then we have the Son, who is consubstantial (of the same substance) with the Father, but also a man. I’ll talk more about that later, because obviously Jesus is the most important reason for choosing Christianity over any other monotheistic religion. Then we have the Holy Spirit (or Holy Ghost) who is God in invisible spirit form; when people say that God is everywhere, they refer to the Holy Spirit; when people say that God is within you, they refer to the Holy Spirit; when people say that God is guiding the Church or that God is always with you or guiding you, they refer to the Holy Spirit. So each part of the Trinity has a distinct purpose, if you will, and each part works together to create one full, omnipotent God. Like a jigsaw puzzle.
So why did Jesus come to earth? What was he doing here? I don’t know how well catechized you are, but basically he came to be a mediator between God and man. He came to “perfect the law” that God had given. Think about it. We are God’s people. God loves us, and we are meant to love Him. We are meant to be close to God in daily prayer, attendance of church, and much more. But we are really quite far away. God gave the law to the Jews in order to close this gap, so that by living our lives in a godly way they may be close to God. But as you can see in the New Testament, some of that didn’t work our too well. They kind of took the law and ran with it and the idea of sharing godliness was lost along the way. In Christianity, Jesus fills the gap. He is fully God and fully man, and he not only perfected the law that might let us live in a godly way, but brought faith so that the law can now be summed up in two phrases: Love God with all your heart and soul, love your neighbor as yourself. So we can see that the Messiah was necessary to a bridged gap between both God and man: The one who is both. We can pretty much see, from an objective viewpoint, that if anything is put into the hands of humans it will be completely messed up. However, God is just, and humans must be involved in the building of this bridge (imagine that you have two houses separated by a river. If you want to build a bridge across that river, both parties must say they are ok with having a bridge in their backyard. So in order for God to be just, he will not build this bridge alone). So what do you do?? You find a man who won’t mess everything up: The one and only sinless one, the savior of the earth. Jesus Christ.
So in a somewhat disorganized paragraph, that is why Jesus Christ is necessary in a religion that professes a close and loving relationship between God and man.
So why is it necessary for there to be a close and loving relationship between God and man?
Very simple. Why did God create us? He created us because He loved us. Why must He have created us out of love? No other reason makes sense. Love in the driving force of our world, found behind any and all things good. Had God created us because he wanted to be angry with us because we are sinful, then anger must be the driving force of the world, as long as an angry god is running the world. If God created us because he wanted to poke fun at an inferior being (first of all, why would he even make himself known?), then isn’t it sensible to think that our world would be run off of poking fun at everybody? Being created in God’s image is a very Abramahic-faith idea, I grant you that, but to think that God would create a world that runs completely contrary to what He is, is kind of ridiculous. The fulfillment of the law is love, our way of life is based off of love (where would we be without family ties, cooperation, marriage, generosity? There is a great deal of unkindness and selfishness in the world, but there is much more love given that it is found even in the most rotten people and certainly, love is much more powerful. Just talk to any mother for a while and you’ll be fast convinced), our world is driven by love. Therefore God is a loving God, and He created us out of love.
Would an eternal and omnipotent being create a world and people out of the strongest of love and then just walk away and ignore it? That goes completely contrary to what we know love to be. It takes two to love, and so it’s only logical that we were created to love God in return. How can you love something that is so far away? There must, somehow, someway, be a bridge between the two that will not break down.
So if we know that the world is driven by love, then God must have created us out of love. if we know God created us out of love, we know that he wants us to love him in return. If we know that we are meant to love God, then we must have some sort of connection to God that enables us to have a relationship to God. By looking over the Scriptures and understanding the imperfect nature of humans, it becomes clear that this connection, this mediator, is the one we call Jesus Christ.
If you also want to know why the Catholic Church, I also have very strong feelings on that. Lemme know.