How much time do you have to earnestly dedicate to researching the well-accepted theories of random scientific fields (T = X)? How much time would it take to actually research the well-accepted theories of ALL the scientific fields to a sophisticated level (T = Y)? If Y exceeds X, then you just have to live with taking some things on faith, my friend.

To illustrate this point, look no further than food safety. It is absolutely essential to our well-being to have safe food, and for many of us, I would reckon it does not even make our radar. I know it didn't make mine until right now. I just automatically trust my food to be safe because it is approved by the FDA, which is comprised of professionals with a much greater knowledge of food safety than me. If I literally cannot live without food, yet I can't be bothered to know even the most basic principles of food safety since I'm busy with other subjects, then I find it perfectly reasonable to trust well-accepted scientific theories as a foundation for relatively unessential things like personal philosophy. If I did not believe so, then I would be a complete hypocrite.