Most of the novelty has evaporated since every device nowadays can do everything imaginable (and if not locally, then via cloud). On old computers, it's just cool to see different kinds of software and games running on it. It makes you want to explore the possibilities. People used to be enthusiastic about the cool stuff their computer could do.
For a while now, I've wanted to set up a retro computer as a "daily driver" of sorts. It feels like a lot of our everyday uses for technology have not changed much over the decades—communication, news, entertainment, writing, organization, etc. If I lean back and ask myself what I actually use a computer for (other than specific stuff for work), I find it kind of hard to answer the question, which likely means I'm wasting a lot of time doing things that aren't deliberate or meaningful.
I love retro computers (especially Amiga), and doing stuff on them will always fill me with enthusiasm.