No it isn't. I think I have a pretty good idea of what I like from the million music-listening experiences I've had. Sure, maybe to get a perfect eq curve for my tastes I would need a perfectly neutral setup. But not really just to know that I like more bass than most people.

If somebody consistently turns up the bass when listening to Bose or Beats or something that's are known for being bass-heavy, do you really think they'd need a neutral setup to know that they like bass?