Congratulations for stating the obvious: people's backgrounds influence their beliefs. If you're born into a certain type of family, thats most likely who you are going to grow up to be like.

Here's a simple concept for you to take in: you can't believe more than one religion. If I am Christian, I can't believe in Allah or Buddha. That's just the way religion works-there is no compromise of beliefs unless you make a new religion of your own that suits your desires.