What games main quests have you completed in the Elder Scrolls games? And which games have you spent an aprox of 50 or 300 or more hours in?

Morrowind, Oblivion and Skyrim. For both.

Played a little bit of Daggerfall long ago on a friend's system, but he deleted the game to make room for something else. Tried getting back into it more recently, but DOSBOX doesn't seem to function properly on my system, I can't get the weapon to swing reliably. It's one thing to die because you miss, it's another to die because you can't even make a single swing in the entire fight.

Played Morrowind a lot more than would be considered healthy, completed the MQ with 2 characters, and still play on occasion. At this point, with several thousand hours into it, I've seen enough of it to be bored. The TR expansion mod gave me another thousand-plus hours of entertainment, but that now feels like "more of the same". Love the game and the detailed and convoluted portrayal of the world, but tired of the setting.

Played at least 50 hours of Oblivion, and managed to push myself to finish the MQ just for the sake of being "done" with it. First 10-20 hours were fine, but the longer I played, the more oppressive the leveling system got, and the more I missed the emphasis on character skill instead of player skill in the previous games.

Never played Skyrim, and the removal of Attributes and other developer design choices make it something I have no interest in playing. It essentially continues or expands on nearly everything I disliked about OB, and removes several more aspects that I liked about MW. The Steam requirement added the final nail in the coffin, in case I ever considered picking up a used copy to try it just out of curiosity.

I've done all of the main quests except for Daggerfall's. I lost my old save and can't find the motivation to start over AGAIN. I've only played Oblivion and Skyrim for hundreds of hours.

Arena is the only game that I have played for less than 300 hours, finished the MQ for all of them and have enough time to get at least six Doctorate degrees spend with the other games.

I've finished all of the main quests once. (But never any of them a second time).

I've spent 50 or more hours in all five games.

I've spent 300 or more hours in Morrowind, Oblivion and Skyrim.

The actual numbers for these last three games are in the thousands, not the hundreds. I'd estimate about 6000 hours in Morrowind, 2500 hours in Oblivion, 3000 hours in Skyrim.

I dont have 300 hours yet on Morrowind, but if you watch my videos, I'm like 20% of the game through.. so.. probably 300 hrs eventually, lol.

I've got easily 1000 hours in Skyrim (with various characters), and haven't finished the main quest yet. I'm saving it for later.

I've finished the MQ in Morrowind and Oblivion. Played a lot of Skyrim but eventually lost interest in the main quest. Will give it another go at some stage.

I've completed the MQs of Morrowind, Oblivion, and Skyrim.... which are also the only TES games that I've played. Kinda on a similar note, the only expansion/dlc MQ that I've yet to complete is Tribunal for MW.

As for hours, I have no idea. Probably thousands for MW, while I only have a hundred or so for OB and SK, but that of course is subject to change.