It's €10 on Steam... can it be enjoyed in a post Skyrim world?
It depends wildly on your nostalgia and your tolerance for game design principles of olde.
I'd probably say no, because even as someone who *loves* that game, I find it tough to go back to without drastically modding the game. Specifically, it's the lack of full voice acting and the kind of lop-sided leveling system.
I didn't even like Morrowind back in the day. There is no waypoint system so finding where to go can be really tricky when a quest says something like "a cave north of town x". the combat system is really annoying as hitting an enemy doesn't mean you actually hit them unless the dice says you did which means a lot of arrows just goes through enemies without a hit at least early on with low stats. Besides that it's a great game. I had fun for a while just exploring the world, but I got bored since I couldn't find a certain cave I needed to find for a quest you get early on so I never did any questing.
Although a lot of my issues might have been that it was my first WRPG and playing FF and such games didn't prepare me for a deep hardcore RPG like Morrowind. Also I had it on XBOX with crazy loading times and never played the expansions. Still it's not a game like Oblivion or Skyrim, it's so much more hardcore and old school than that.
To me, Morrowind was one of my very, very few truly magical experiences in games. Not to sound too ridiculous, but it completely transcended every other game at the time to me. Saying that, it is very hard to explain to someone who hasn't played it when it was fresh, why it was/is so great as there is some serious issues with that game. Regardless if you think it is the best out of the recent elder scrolls game (nostalgia unfortunately clouds everyone's opinions a bit) It is most certainly the most interesting World out of all the ES games.
And having to walk across the entire frigging map just to talk to someone and then be told to basically walk all the way back while trying to survive those fucking flying dinosaur things and sometimes sand storms, really makes it feel like to have accomplished something once you've rolled into town . Something you just can't appreciate from Oblivion and Skyrim due to the quick travel, but also the relative ease of both. I'm not sure if that is a good thing or a bad thing, but it's certainly different and unique.
I should clarify. I've only played Skyrim and Oblivion, but I love the Elder Scrolls lore (don't judge me). Is it worth dealing with the dated gameplay/tehnical part of it to experience the story/universe?
If you don't mind a boatload of reading, then yes. I love the story in Morrowind, which is alluded to quite a bit in Skyrim.
@MrCleanTrousers: I've been playing an un-modded version of GOTY Morrowind periodically for the last year and am loving it after having never played before. MW has more customization than Skryrim or Oblivion, a better storyline than either and a very interesting art style. I like all three games very much, but I'd go back to MW before Oblivion, as the latter is too much like Skyrim.