1) The leeway you get as an attractive person is huge. That's true for life, not just dating. there's a ton of research on this - do a google search if you haven't seen it. its actually very interesting. "halo effect" is what most of the literature is on.
2) I have a lot of friends who are girls, and the way they reject guys can be incredibly harsh. I guess because they get asked out so often, but a guy putting himself out there (and yes, it is nerve-wracking for a lot of guys) is not something many girls I know have empathy for. I get that some guys are really creepy, and even dangerous, but its not the same guy asking you out over and over again. A lot of "creepy" guys are just awkward and scared shitless at the thought of being rejected again. Some are just really unattractive. My best guy friend (5'6") asked a girl out after maybe two years of not trying to date, only to have the girl ask her friend "why short people even fucking exist" right in front of him. And that's somehow ok. If a girl asked me out and I said "no fat chicks" I'd probably get my ass kicked by anyone who heard. No, it's not the girls job to cater to every guys feelings, but IMO they can at least remember that the guy is human.
REQUIRED REDDIT DISCLAIMERS: No, not all women. Probably less than half even. Also I personally have never actually been called creepy or disgusting or any of the things I hear my friends get called or call others. I'm ok-looking and have been dating my girlfriend basically since puberty. These are just my observations as someone with close friends of both genders.
tl;dr: some guys are assholes. some girls are assholes. regardless of gender, people are more ok with hot assholes than ugly ones.