It's just a fun form of paid cosmetics, which are the same as most things that are cosmetic. Some people want them for their aesthetics, some people want them

It's just a fun form of paid cosmetics, which are the same as most things that are cosmetic. Some people want them for their aesthetics, some people want them as a status symbol, some people just wanna collect stuff. Also some people will want to support the development of their favourite game, and in return they get a token that provides no advantages in game (to avoid "Pay to Win".)