This thread highlights some interesting (not to say depressing) differences in attitude. At the extreme, attitude 1 is "I have MY sound and that's what I'm going to use. So there". Attitude 2 is "What suits this piece/song? How can I achieve that?" A number of previous posts betray some pretty sad snobbery (jibes about "playing on Nana Mouskouri records", "hired hacks", etc, etc). I'd bet that most in the attitude 1 camp are weekend warriors.
It isn't just the sound of your instrument or what you play that's important. It's how it fits/blends with what else is happening and with the overall feel that the writer/arranger/producer of a piece wishes to achieve. There is an enormous difference between doing your own thing and playing for someone else. Part of being an adult is to appreciate that you and what you do are often not the centre of the universe.
The sound we like when we're playing at home/with ourselves (oooer) isn't necessarily the one that works best in a given context. I love my old J bass, for example, but I'd be the first to admit that it doesn't always suit. That's OK. If someone is paying me, I try to give them what they want. It helps me make a living and lessens the likelihood that I'll have to clean toilets in order to put food on the table. I can always indulge myself/be "creative" at another time.
If someone handed me a '62 L series P bass and asked me to use it, I certainly wouldn't turn my nose up at it. For certain things, they're pretty hard to beat. I guess I shouldn't say all this. After all, the more people there are with attitude 1, the greater the chance "hired hacks" like me will continue to be offered work.