I would be more concerned about damaging the actual item in the shower all the time. Honestly I don’t understand why people shower with fine jewelry; it really does not help in terms of maintaining its beauty and it takes minimal effort to take it off each day. The idea of soap scum, dirt, chemicals, etc. getting into my nice stuff grosses me out personally.
THIS! High end pieces should be treated with some TLC. I don't baby my jewelry but I also don't treat them like costume pieces. If I'm spending that much on something, I'd want it to last a very long time.