It seems to me that a few people are taking offense to posts in this thread merely because some of us don't appreciate seeing enormous crowds (or actual parties) on top of mountains.
I have no issues with out-of-staters coming to Colorado to climb, as I used to be one of those folks myself. I also have no issue with other people wanting to be on the mountains, and I recognize that we're all "part of the problem". I also don't care what clothing people climb in, I don't care if they bring their dog or cat, and I don't care if they choose to climb into an advancing thunderstorm out of foolishness or fearlessness. To each their own. Still, that doesn't mean that all 14'er crowds are completely acceptable to me.
Examples? Here's a couple that get me:
1) LARGE and garish mountaintop parties. These have occurred several times in recent years, and in a few different ways that include everything from actual kegs to hot tubs. Neat ideas, to be sure, but maybe a bit overboard depending on the execution (I know some have been worse than others). Parties are fine with me, but having a party on the summit of a backcountry mountain detracts from the natural experience that I think we can reasonably assume most people are seeking when they climb mountains. Summits are probably the point of most concentrated activity in adventures like mountaineering, and I believe that visitors to these places should be considerate of the fact that not all climbers were looking for a club scene on top of a peak (I'd imagine most people aren't looking to find such things).
2) Corporations bringing 150 people up a mountain at the same time for a company event (see the picture someone posted earlier in this thread from Grays Peak). While perhaps not illegal in non-wilderness areas, such activities certainly seem overboard for a place like Grays/Torreys. Again, I think part of this comes down to concentrated levels of activity. If a group of 150 people starts together, they'll create a crowded atmosphere by virtue of the fact that they're somewhat clumped together. Conversely, 150 strangers starting up a peak on the same day (at different times) does not typically have such a concentrated level of activity.
On the legal side of things, I've seen quite a few other large organized outings (often of 30+ people) in wilderness areas, where such activities are often against group size regulations for these places. I saw a group in the James Peak Wilderness this summer that I would estimate at 75 people. That wilderness has a rule that limits group size to a combination of 12 people/pack stock. A few years ago I ran into a huge organized event on Massive (40-60 people), which again violated that area's limit of 15 people per group.
We all know that 14'ers aren't the place to be if you are trying to avoid crowds, but in some instances the crowding occurs due to the inconsiderate actions of others. The rest of the time I'm more than happy to make new friends while exploring the natural world. I will say that I've had great luck with late day climbs, particularly in months like September (when storms aren't a factor). We were on the Lincoln group yesterday, and observed the typical 100+ vehicles in the parking area (wild-ass-guesstimate on numbers there). But, since we started our climb at 1pm, nearly everyone we encountered was coming down to Kite Lake from the Democrat-Cameron Saddle. We had the summit of Democrat to ourselves, and only saw two other couples on the mountain the rest of the day... some nice folks from Texas we talked to at the saddle between Democrat and Cameron, and another nice couple we met on top of Lincoln (we finished our hike with them). So, crowds can sometimes be avoided even on the easiest 14'ers, even on the busiest day of the week