You've never done anything wrong in your life? It doesn't matter that you weren't alive yet during Jesus' time. What He did was for all people, past, present and future.
If you think you (body and mind) were put together by a mindless physical object, of course you wouldn't worship that physical object, that would be silly.
But would you appreciate and honor a person who took a bullet for you?
If so, why wouldn't you honor someone who gave their life for you in a much more profound and eternal way? Someone who paid your debt, so that you can have true LIFE (beyond this temporary existence) as well as reconciliation, blessings, peace, joy and unfailing love with the one who gave us life in the first place. (I'm really trying to understand your mindset here.)