First of all let me say Welcome Home from the war, and Welcome to The boards.
Your questions and concerns stike deeply at me for I can understand them. Theya re not that uncommon.
I’m an Iraq War Veteran and I’ve seen how being over religious can ruin the lives of other people. On the other hand, I’ve also done things while I was deployed in Iraq that make me feel as though I need the help of a higher power. I was raised Catholic, so I feel the most comfortable with the Catholic Church.
Yes, there can be “Zealots” who do not see the truth of what true faith entails and they can make life miserable for those they disagree with.
Being Riased catholic (I was too) does not guarantee that we understand the true nature of our faith. It is an unfortunate truth that catachesis have been horrible over teh last 40 years or so. Bit that is beginning to get better.
God has seen your trouble and your pain. He has guided you here.
Since I’ve been home all I do is drink heavily, smoke constantly and indulge in gambling here and there. I make enough money to support these things and they make me feel good.
I agree with the others who say this speaks to PTSD and perhaps some councilling would help. I would also say that discussing this with a priest might help. Perhaps he can recommend a councillor who is catholic, or at least christian.
I guess I should fear the wrath of a God for my current choices but honesly I really haven’t seen any “compassion” or proof of any God. Lets see while I was deployed my girlfriend of 5 years left me for someone, my grandma died and I was not given leave to see here and when I get home my own brother steals over 4,000 dollars out of my bank account to support his drug habit. I have a really hard time beliving that praying and going to church will make everything better when God(if he is really out there) can just sit back and let these things happen.
I guess that, from what I’ve read so far, the reason you have not seen compassion or proof, is because you have been sitting on the sidelines, “looking on” as it were. Correct me if I’m wrong in this, but you mention nothing about praying, going to mass or confession or any other form of spiritual effort. How can one learn of God, or be healed, if one is not participating?
To the issues you present:
Your girlfriend left you for another. Better that God showed this to you now instead of after you were married.
Not able to get home for your grandma’s funeral. Sad indeed, but hardly something to “blame God for”. If you r Grandma was a True Christian, she is now in heaven and looking down upon her beautiful grandson. She is praying for you in the presence of and before the most Holy Thorne. Isn’t it more comforting to contemplate upon this instead of being angry because you were unable to see her corporeal remains interred in the ground?
Your Brother Stole From you. Sad indeed. But what did he steal? Gold, mammon. He took nothing that cannot be replaced. What is sadder than his taking the money is that he too, like yourself, is in dire need of help. Perhaps he does not recognize this yet, but you have and that is why you are here.
Look in your life for God’s blessings. You are already a member of His most Glorious Church by virtue of baptism. You can quickly restore yourself to the sacraments by the simple effort of a sincere confession, after which you can begind to receive the Holy Eucharist, Christ’s Body, Blood, Soul and Divinity, into yourself.
Please go and spend time just sitting before the blessed sacrament.
Pray the Rosary
Ask you r Grandma to intercede for you and to help guide you. (maybe she was thw one who got you here

Just a thought)
I am, holding you up right now in prayer that God soften your heart and that you are able to see more clearly those blessings that surround you. That you will be able to seek him, not in judgement for perceived wrongs, but in Love. Ask Him to embrace you as a Loving Father embraces a hurt, crying, sorrowful child.
I sincerely hope some of this is of help to you.
Peace
James