First of all. You shouldn't just hand out respect for people. Make them earn it. Second, not all girls are nice anyway, some will be mega-bitches with their bleach-blonde head shoved up their well-used you-know-what.
Now don't become a misogynist. Instead retain a healthy neutrality. Don't think good or bad thoughts until you know them well enough to make the judgement.
Second, there is nothing wrong with wanting to have one night stands. I know I do. If that's all you want, do it, get it out of your system. If you still want to do it after a while, then you know that's what you want to do, don't force yourself to be Mr. Nice guy with the sexually repressed wife, picket fenced house and a wardrobe full of Polo-shirts.