A while back, I wrote a Breakfast Topic on technology that got folks up in arms. It seemed that while most people were fine with the majority of steampunkish Gnomish and Goblin technology (and some absolutely loved it), the one piece of equipment that ground more gears and got the cranky juices flowing was the gun. The people who didn't like it found it intrusive and at odds with the world around them.
I'm personally of the "Are the stats better? I'll take it!" variety, so gun or bow, I don't think about it that much. I don't care for the noise of the gun, but that's my only gripe. At the same time, I don't do much roleplaying, so I don't have to worry about whether a gun would be appropriate for my character's storyline. Plus, my characters that are able to use guns are alts, so I'm not terribly committed to them.
What about you? Are you vehemently anti-gun? Or are you cool with it, as long as the stats are an improvement? If the stats were exactly the same, which would you go with -- a gun or a crossbow? Aha -- see, you do have a preference! Tell us what drives it!