Why are people being so nasty to me already? I'm new here?

I said this, "Hello. I am new to this website. What can I expect from this website? I am a nice lady and I kind of expect everyone here to be nice, sweet and kindhearted."
Some laughed and some said, "Suuure" and some said, "Heck no lady" and "Yeah right" what's so funny about that. That wasn't the kind of welcome I was expecting.
Only three were nice to me.