I am really not precious about mine any more. It's quite worn, like an old jumper, and if I knock it on a door or something I don't mind - it's as solid as a rock and has a lot of character. There used to be a time when I played an Alembic that I would be afraid to play the bass almost, but as my #1 bass has a non glossy finish and lots of nice worn areas I can just pick it up and it feels 'warm' straight away. I am much more careful with my fretless, but it's annoying because the gloss black finish and mirror fingerboard means I can see all the finger marks!
I don't think I could have a main bass that I had to be especially careful with. I don't mean I willingly dent my bass or anything. I take great 'care' of it and it's my most precious possession, but I don't 'baby' it, I guess.
ped