I’ve played banjo ( for my own pleasure ) for about 10 years. I retired last year, have more time for it, and started attending jams.
What’s interesting is that many of the best musicians play multiple instruments. The incremental effort to pick up a new instrument must be fairly small. I can’t tell you how many people I’ve met that play great guitar, standup bass, and fiddle. ( Banjo and mandolin seem just a little less likely to be included. )
I hope I get there some day! It looks fun to put down one instrument, pick up another and continue ripping.
I'd liken playing multiple instruments to coding in multiple languages. There's a baseline understanding of the fundamentals that is necessary to overcome in the beginning, but once you get confident with them they transfer across multiple instruments/languages.