Ha, I don't blame you for not liking it. It usually goes against the sound the artist intended, and can add distortion.
I just think it's fun pumping up the bass on these things, you should try it just to experience how loud it can really get. For the most part I play music with a flat EQ though.
But I've heard some of the FiiO amps have a distortion free bass boost... I almost want to get them just for that.
Sort of distortion free. I hear slight distortion on my SE215 with the E11 with max bass boost. I admit, bass is a very satisfying sound. I sometimes find myself playing around with my Foobar2000 EQ just to see how much slam I can get with my HE-400.