This is how I tend to approach a lot of "milestone" content in games anymore. Which feeling overcomes me more when I finish: A sort of, "Fuck yeah, I did it!" or "Thank fucking god that's over..."I didn't consider it an accomplishment, but more of a relief.
My first 75 was RDM, but I largely hated how the community had pigeonholed it into a healer. I could've done weapon burns, bone parties, or whatever, but I actually wound up dinging 75 picking on Kuftal crabs because it was pretty much something I could do at my own pace without some neckbeard whining about Refresh dropping for 3 seconds or how it's my fault a tank is shit and sponging way more damage than they should be. Was it optimal? Nope. Did I care? Not really. Which is further why I adored Campaign as an alternative leveling path for later jobs even if the more traditional merit parties could be 3-4x better. It simply cut out the bullshit of LFG, hoping the right people were interested, and that they were actually competent. If I died, most often it was my fault. If someone needed help, I could jump in. It might not have been the same sort of community interaction on the micro level like, say, fighting Odin, but it didn't need to be.
Nowadays it's just a lot better with Trusts. Sure, some might argue they kill the point of an MMO, but it's a harsh reality that the older content gets, the more difficult it becomes to find help completing it, and SE doling out crap EXP for redoing Promies or whatever wasn't any real incentive for oldbies to backtrack and help the fresh meat. And stuff like that is something I think those fortunate enough to have found a good LS or static fail to appreciate, as it's easy to not be aware (or care) of the struggles of those outside your immediate circle. And whether we like it or not, stuff like this is partially why games since strove more to kill WoW or clone it as opposed to XI despite coming out not too far apart. Designing games in such a way that you can't play them when you want to just came off as counterproductive to me and I suspect many others.