What you are feeling is probably fear. I know what you feel cause I have been there. For some stupid reason, it is ok for society to laugh about a guy's size. Women laugh about it, guys laugh about it, there isn't a comedy movie that doesn't have a size joke in it. I think the whole thing is pretty cruel and it probably ruining lives. I remember being told that it is bad to make fun of a girl's body, weight or breast size but at the same time, a girl can loose weight if she really wanted to, or have a breast augmentation if she feels they are too small. You find that on the other hand, its ok and cool to laugh about a guys size, though in reality, guys are pretty much stuck with the size you have (unless there are new techniques that I am not aware of). Having a small penis complex is painfull and you feel alone with your problem. Society doesn't feel sorry for guys in general cause guys are supposed to be tough and all that BS... Anyways, enough of the depressing stuff...
There is good news. Don't ruin your life. Your size doesn't matter much to some girls cause a good portion of them can reach orgasm only through stimulation of the clitoris. This involves, cunnilingus, rubbing the clitoris or what else which doesn't involve the dick in any way... So as long as you get hard and penetrate her and get your pleasure, you know that she will get hers and be happy with it. For example, lesbians have pleasure in bed without any of them having a dick evidently. So sexuality isn't that much about size, and there are many types of women out there. I think you have to try to decrease the fear factor in all of this. I can not promise you will no meet a stupid disrespectful girl or a girl with tastes for a larger penis which is what happened to me. But what I can promise you is that there are not one, but many girls out there that will love you for who you are. And I don't think that you will have to look very far to find one. What you have to overcome is the fear of humiliation. You have to go through that threshold of fear and learn to dedramatise the matter and be ok and prepared for the outcome.. You ow it to yourself to try to find love. One day you will find someone and you will look back on this and remember how big issue it was in your mind. Seek help if you feel too much pain because it is mostly in your head. Good luck man, as for me, I found some one then another and so on... Life goes on.
Being alone isn't so bad compared to being with the wrong person