It is okay to be alone, there is a time when you need to realize that some people are just not meant for the life together with someone and you can be one of those people. You have to realize that you are not always going to be with someone and that is totally okay.
Who cares if you do not have a family, you have other things with you, books, anime and all that other things that you might like, hobbies that you can be married to. You need not a guy or a girl in your life, you can handle things all by yourself and that can be the truth of it. So let the world know that you are more than happy and comfortable on being alone.
Here are some forever alone meme that might help you out to express yourself more in order to let people know.