I am relating to everything you just said, I'm getting closer to 26 and the prospect of a relationship isn't in the foreseeable future. I am single because of the same reason as you, I have been surrounded by jerks, abusers and terrible relationships. Now, the only guys that like me a weird, drunk, or have major issues. I feel disgusting, I can't picture me being with someone because even I am repulsed by myself, so I can only imagine what I come across as to men.
I pretend to joke about it, and sometimes I lie and say I'm happy alone, but it's not true. I'm so unbelievably lonely it seems to be slowly driving me crazy.