I think we take this for granted with physical objects—everyone knows the qualitative difference of writing with a fountain pen vs. a promotional pen from a trade show fair, or the difference between drinking from a vintage wine glass or a paper cup.

I think it's perfectly fine to do the idiosyncratic thing you happen to like but most people don't. But it becomes a problem if you force that choice on others (i.e. a solo project vs. a codebase others need to use).