Delivering the arrow on target is easier with a crossbow. The rest of the crossbow hunting experience should work the same as vertical bow hunting. IMO the two main reasons that people fight crossbows so rabidly are either;

New=Bad

or

The Clubhouse Theory- We have it, we don't want to share it, go away.

Do what you like. As silentassassin said it isn't up to us to decide what another hunter should use. If it is safe and humane it is a valid hunting tool. Have fun!