Is it a bad thing that i like to be alone, why do people make such a big deal out of it?

No, as long as you have healthy thoughts and you don't feel as if something is wrong with you mentally. Some people just enjoy solitude and feel best when they are by themselves. My brother is that way and he's pretty normal to me, just that he prefers to do things alone. Many outgoing people may find it strange, but you are who you are, and if you feel comfortable by yourself then don't worry about what other people have to say.