The biggest reason is also the simplest...its not bowhunting.

What is the difference to you if someone is sitting in a tree stand some distance away from you if they are using a longbow, recurve, compound or cross bow?

You could ask the same question about flintlocks, too, and it wouldn't change the answer.

I have NO problem with a separate season for crossbows - but crossbow hunters are not bowhunters. They do not belong in bow season.