Best thing to do in this situation is to NOT debate. Just tell him you don't want to talk about it. Religious debates can NEVER end well trust me
It ended about 20 minutes ago. We're both exceptionally drunk and just agreed to ignore each others opinions on the matter! XD Family relationship rift: averted!
Ha, I had one of these with my dad once. He was more of a 'you'll understand when you're older.' Pretty cool about it, actually.