I just feel very empty sometimes (I regret going to university after having worked full time, now I have nothing relevant to do and uni feels like a huge waste of time) and music makes me feel a little less empty so I won't lose it while writing papers and such.

But the magic for me is not spending thousands, 6XX are enough for me and I have tried HD800's multiple times for more than just a few minutes. I like my 6XX more. Now everything is about music. I have 10TB of music in flac format (I keep a backup for a friend in case his stuff ever breaks), more than 300k tracks from old classics to music that came out in like 2010ish and it's a lot of fun to go through all kinds of genres and I also add more and more to the collection over time.

So for me it's more about the music, but the 6XX definitely contribute to that. They sound so natural, everything is just right, nothing feels bloated or unrealistic and that makes me appreciate a lot of music I never listened to before I got them.