Of course. Since when is being nice a negative personality trait?
Since the dawn of time, baby, since the daaaaaaaaawn of tiiiiiiiime
I was waiting for someone to say something like that :P
I think there are a lot of guys out there who treat women like fragile little flowers, and I think that's what the turn off is. Like if I'm out with a guy, I say or do something stupid, and he cracks a joke about it, that's cool. If a guy is too insecure to make the slightest joke, in fear of hurting my poor little feelings, than that's a problem. I guess it would be relative for any girl, but i think it's safe to say it's possible be too nice.
I've made that mistake...it makes me become boring. And I assume most girls don't like us (me) thinking they can't take care of themselves.