It's fine if your tone is important to you, and it's fine to spend a little extra money getting a tone you like, but damn...the money some people spend on either searching for that one elusive "holy grail tone" in their heads or spend as much or more trying to get every single variation of every single tone known to man, it's rediculous!
The audience doesn't care if your bass sounds more like a pre-EB ray or a post EB ray, and they don't care if your bass has 60's J spacing or 70's J spacing. It's this little stuff that we obsess over, but it will never be recognized by anyone but us.
And there's nothing wrong with getting a tone you like. But if you're looking for a good example of every tone ever recorded, man, you need to be looking for something else. It's when the quest for tone interrupts or halts the musical process that I feel it becomes a crippling thing, and people just need to start playing what they've got and quit daydreaming about how much better life would be with this or that. That's all I'm saying. Just don't let it cripple you musically.