Compaaionate faith is perfectly compatible with the facts of evolution. Life is still valuable and to be enjoyed. You can see it as having a purpose, even if we are too puny in this vast universe to ever get to the bottom of it. If you want, give your life YOUR purpose, one of your own choosing. it doesnt last long in the end.
You are finding all this stuff out at the right part of your life. You are not responsible for other peoples feelings and reactions to your convictions. Your parents are in a FOG themselves and cannot help it. But they have to deal with this for themselves, just like you are having to. It gets better.
Just remember that most people are basically nice, you have your whole life to make friends share love, and to leave something worthwhile behind when you die.