Yeah, I've been going back and doing a new modded run through on a yearly basis since Skyrim came out. I've played Oblivion and Morrowind as well, but nowadays I only go back to Skyrim.
I did enjoy the quests and stories of the older games quite a bit more than Skyrim's. But the gameplay experience offered by some of the overhauls for Skyrim offers too much for to turn down.