Yeah, I haven't really played in a month. After about 325 or so hours with two characters around level 60, it just feels tired. When you get around that level, it feels like everything is pointless. Gold is absolutely meaningless; I have about 300,000 now, and nothing to do with it. Loot is the same handful of crap all the time, and now I don't even have a reason to pick it up anymore (see the gold comment). Way too many skills and their trees are already fully realized and exhausted; this happens way too quick and easy because of stupid game design decisions. Combat is pretty boring anymore with nothing new to try and no new enemies to fight. Almost all encounters are without challenge on the highest difficulty. Stupid AI is the only one dying from traps. Way too much of "look at the markings on the wall / item, pull these levers in that order (herp derp, a-derp-a-duhr)". That's the extent of puzzles in this game? It's the same boring crap over and over.
Right now I'm just wandering around looking at the rest of the nooks of the world, trying to find something new to do. But mostly it's more of same looking landscape, with the same looking dungeons with the same enemies, same traps, same loot, same pull these four levers in this order a-derp-a-duhr. Oh well, it was pretty fun while it lasted. I guess now I'll wait for expansions and try out mods.
In summation, my main complaints are there's some serious balance problems with skills and leveling which cause things to become easy and uninteresting quickly, stupid AI, all the technical issues, and there's not enough variety (but enough for 150 or so hours, maybe).
To be honest i think that 325 hours -and even 150 -are a fair amount of time -if not exorbitant compared to other games of the same price.

I agree with you on some points (puzzles,wavering Ai,bugs and glitches etc.) but sincerely I don't think there is any cause for complaint about "variety" in a game with such a great landscape/world design that have kept you busy for so long.
And there's always room for improvement with the future Dlcs (and patches for the bugs/glitches) not to mention the mods for the pc version that clearly improve and extend the experience.
Sorry if i say this again,but i have the suspect that too many expectations were too high for the
vanilla version of Skyrim.
Of course the game is disappointing on a few aspects,but you've to consider also his strengths,and i dare to say that they're far superior and prevailing In the end.
Still, 500 hours for a $50 game ain't too shabby. Only wish all the games I buy kept me busy that long.