Is the existence of a Creator logical?

You cannot be real atheist and then say creator exist, that is contradictory. Is no valid reason say any creator exist, who create creator is valid question, you cannot just dismiss it use distorted semantics. Who say infinite regress not possible, is no more impossible of say gods exist. Big Bang only tell of present state of universe, are variations of it, Oscillating Universe idea say are cycles of Big Bangs and Big Crunches, Damped Oscillating Universe say each cycle smaller of previous one. Big Bang is not creation of time and space, is not creation at all. You use word "logically" describe illogical ideas, you not tell anyone what is logical. Is illogical say, "There must be a first cause..." Is no good reason say that. No is not logical suppose first cause, that is old argument, skeptics refute it long ago, you need do much more research. You are just theist pretend is atheist.