I’m not what one might call a religious or Orthodox Jew, that is, one who abides by most of the Torah commandments. Neither am I what one calls a secular, agnostic, or atheist Jew. I do believe in Judaism’s basic dogma about G-d, the Messiah, sin, and the afterlife, and observe most of the major holidays to a certain extent, but certainly not in the way an Orthodox Jew does. However, I have a deep faith in the moral teachings and wisdom of Judaism and attempt to put that faith into action in my everyday life. In Judaism (and no doubt in Catholicism as well), one does not “do it,” as though religion were a separate part of one’s life, as distinct from work and leisure activities. On the contrary, religion informs all the behavior in one’s life, not for the purpose of restriction but as a means to enlightenment.
I am not encouraging you to embrace theism; I am encouraging you to embrace the religion of your choice, which seems to be Catholicism. This requires knowledge of its teachings, which you say you have already, and beyond that, faith in its teachings. As I stated previously, this faith does not necessarily mean embracing every ritual without reasoning, doubting, and searching. I believe you can combine your faith and reason if you choose to do so. Like any other enterprise, and perhaps more so, it requires effort on your part. If you are content in your life without the possibility of growth by means of experiencing religion, so be it; however, I get the feeling you are not, or else you would not be questioning as you are. You also appear to be afraid of taking the plunge because it is risky in your view and perhaps a waste of your time. Again, as in other aspects of life, you will never find out what the potential rewards are if you are held back by fear.