Sometimes people seem to think that a game that's completely glitch-free and completely polished is best, but that attitude kind of misses the point
The thing is, glitches and small bugs can be not only fun for the playerbase but also adds some interest and enthusiasm to the community - you get long discussions breaking out on forums as people ask how reach these glitches and people discuss them, post videos about them, speculate... hell, sometimes people spend hours trying out glitches in game. When you hear somebody talking about an interesting or funny one on a forum, a lot of people think, "huh? I've gotta log on and check this out when I next get the chance." They can also be the perfect cooling-off from the actual point of the game, and lets people do something a little different.
Of course, I'm not talking about glitches that cause problems for gameplay, but funny and interesting glitches.
In PlanetSide, there were a number of hilarious glitches. Vehicle jumping was one of the best known ones, and they were fun as hell. There was also a glitch where you could use a lodestar to dump an AMS through the capital-shield of an enemy base, and then you could spawn inside. There was one where you could use a telepad and router to enter the docking bay of the HART. Back in the day, there was also one where you could fly a hacked lodestar to your sanctuary which carried a Sunderer of enemies
My point is, when you come across bugs and glitches that do funny things, don't remove them for the sake of it. Leave them there and let the community find them. Only remove bugs and glitches that can ruin gameplay.
Although not "glitches", Halo 1 provides a pretty good example. Vehicle physics are pretty jammy. You'd think this was a drawback, but actually it's part of the beauty and hilarity of the game. I must have come up with a dozen different ways to make Warthogs flip and spin with grenades on multiplayer
So sometimes getting everything absolutely perfect is a mistake. Glitches, bugs, hidden areas, easter eggs, they can all add a lot of interest and funny memories to a game, so as long as they're not messing up real gameplay, leave them there for us to find, or hell, even deliberately add some