I guess I will go against the grain and agree with Kevin. I've seen arbalesters who used medieval style crossbows, without sights, and to be honest, I can't really see how crossbows can be compared to guns in terms of efficiency. Modern Crossbows are probably very accurate, but as accurate as a rifle? Crossbows seem to have the same range of technology that bows have; some are very modern and some are very archaic.
I also think that any tool takes skill, whether it's a bow, a crossbow, or a compound. I think it's okay to take a stand for archery, but let's not cross the line and start insulting those who chose to hunt with crossbows. I shoot a longbow because I like the looks, the feel, the emotional attachment. To say that everyone who shoots a compound bow, crossbow, or rifle only does so, because it is easier, just seems a little off to me.

Here, in Iowa, we have a massive over-population of deer. I don't really see how adding crossbows is going to damage the environmnet or even the number of deer an archer is able to bag. I guess I just don't get what the big deal is. Maybe it depends on locality or something?