If you have a problem with something coming from nothing then you are just inventing semantics to cover your own backwards engineering. If God exists and is eternal then in every real sense he has come from nothing. If he has truly always been then he must have co-existed with nothing. Even if like me you are an atheist then one must accept that the big bang is a moment of creation. You can seek to minimise such a miraculous event by as a man inventing a silly reduced concept like God to whom you attribute human attributes but really there is no need and the concept has often been an excuse for barbarity and stunting mans potential. You do not need God to have a reason to live because that reason is love. It is the highest ideal to which we all can strive and has driven our evolution and advancements in many scientific, artistic and social fields by deepening our humanity and potential for compassion.