What's so great about chairs?

For me, chairs help having a sense of completion on my character.

For example, my Blaze Wizard has the Miwok Chair, with the cool little fire and everything.
For my main I have many chairs, but I just care mainly for my World's End and Black Dragon Chair, since they fit my look so well. When I use my Balrog pet, I also use a Balrog Chair.

Something that makes your character feel "complete", kind of motivates you to play more. Just like having hair or clothes. I can't remember leveling my Bishop with ugly magician job clothes, ugh. It's about helping you like your character enough to level it.