i dont believe in God but i just have a feeling that i have lived in other lives before. ive spoken to some friends and they say that you have to have something to cause the re-incarnation ergo God.
does anyone else have anyother opinions? 
Having seen this I’ve entered an essay under ‘Essays and Theses’ which you may find relevant
Why would you have to have something cause the reincarnation? Are these Christian friends? Christians tend to believe that God made everything out of nothing, so of course in order to live at all or again you would need him. Of course, this is not a Biblical belief. This doctrine is no where in the Bible, but many Christians affirm it as “creatio ex nihilo.” I follow the belief that from nothing nothing comes.