Earlier quoted context omitted.
It's definitely not a bad time to join 3d printing industry. Much more mature than what it was even 5+ yrs ago
What’s a good use for them? I have been on the cusp of buying or building one for many years, but outside of the occasional desire to 3D print a random replacement or enhancement part for something, such as a new back for my minidisc player, which I can do via mail order 3D printing, all the examples at say Microcenter are just admittedly neat-looking but ultimately useless chintzy plastic goods.
Honestly, I’ve enjoyed designing custom pieces for board games.