Do I need to follow Islam because my father or forefather followed it?

The call towards Islam in most of the prophet stories is not to follow what your father or forefathers worshiped blindly. My fathers and forefathers were following Islam and I think they are following it blindly just because their parents did it. Now, it is almost impossible to figure out the true religion because there is so much literature in different religions and most of it is hard to understand including the Quran. Reading the Quran and some of the other religious books confuses me more than making me understand as I cannot completely agree with one or other. Here are some of the choices and there may be more: 1. I am Muslim and just follow Islam blindly believing it is true religion. 2. Research all religions and try to figure out true religion. With my own limits, I believe it is almost impossible for me. 3. Believe in humanity and do not think about any religion. This is an easy thing to do but not sure it is right to do. I may sound weird with this question but I believe the scholar/people here will provide some good perspective and clear some of my confusion.