It’s a consequence of getting attached to “stuff” and giving material things too much importance. If you enjoyed the process of collecting what you have, there is no problem. But if you feel bad because you don’t have something or because other people can get it more easily than you, then you’re being possessed by your possessions and a slave to “stuff”.
I was in that boat once too. Obsessed with collecting stuff, had plenty of unobtainable things, even an old school mount from early 2005, did a lot of things I didn’t want to do, but felt driven to do them anyway, and drew some satisfaction from owning titles, mounts and skins that most other players didn’t have. Then I had my account deleted because the game had taken over my life. I regret that partially, but it also set me free and showed me how much negative emotion this focus had caused.
When I came back last year, I started with nothing and with no way of getting all those things that meant something to me back. Now I just play for the experience, and unlike in the past, I feel I can just quit again and it wouldn’t be a big deal for me. It makes the game more fun. There are still carrots I chase, but I no longer do mind-numbingly boring activities for something that doesn’t directly impact my daily enjoyment of the game.
The average person lives 4000 weeks (“Four Thousand Weeks” is a good book worth reading), how many of these do you want to spend on re-running old content for a mount or a transmog you’ll never actually use?
I actually did something similar in real life too. A few years ago, right after deleting the account, I decided to “downsize” and de-clutter my life. I donated hundreds of books, games and CDs, gave away a lot of my other stuff, and deliberately opted for more simplicity: fewer things, but with most things I own having a purpose and adding to my life (I still own too many musical instruments, but that’s okay, I’m not an ascetic).
It’s all been good for me, though I realize it’s not for everyone. Still, there is no security in “stuff”, and one day you’ll lose everything anyway. It’s true for the game too: One day WoW will close and everything people spent their time on farming will be gone, so make sure you at least have fun!
Too preachy? Okay, I’ll stop!