Lonely "loner"...

I've come to realize that I simply don't "like" most people. I'm just generally indifferent to most, and I "tolerate" people to varying degrees. I often just feel too indifferent towards people to really connect with them. This means I spend my life alone, no one to talk to or spend time with.

I've met very few people I actually genuinely "liked" (both platonically and romantically), and despite my best efforts, none of them wanted anything to do with me. Then I get hung up on those people, and how I wasn't "good enough" for any of them.

It's frustrating, sad, and most of all, lonely, living this way, but I don't know what to do. I love the feeling of actually "liking" someone, and it's heartbreaking to know that I'm as old as I am and have yet to know what it's like to be "liked" back by someone I think highly of. But I can't just force myself to "like" people. So what exactly am I supposed to do?