Why cant i find a relationship without the guy wanting sex?

I get asked out alot by guys and i must have dated around 30. At first they all seem keen. They be like really nice and shower me with compliments and affection but after a few dates they seem to get mad, frustrated and lose interest coz i won't sleep with them. I get called things like boring, negative, untrusting, a prude, nun, frigid, full ov meself, stuck up, etc etc all because I won't sleep with them. Some also blackmail me aswell and say things like if you really like me you would sleep with me urghhh and some even try to rape me. It just disgusting. I have also spoke to hundreds of guys online and all they go on about is sex. Its like thats all people think about these days. I have respect for my body and don't just want it to get used. It like guys don't seem to understand that. I find it disgusting that guys expect me to drop my knickers after just meeting them. It like thats all they care about. Is there any decent guys out there that not just after sex. Is there any hope of me finding a guy that won't try to rush me into having sex or should I just give up dating.