reasons to believe, there is no God

[Tiberius]

We have evidence that the universe began to expand at some point. The universe itself has always existed. It did not have a "cause".

absolute assertions request proves. do you have any ?

There is no reason to think that the universe hasn't always existed in some form. What reason do you have to think that the universe came into being magically? You think there was no universe at all and then, suddenly, POOF! it came into existence?

yes, all scientific evidence point toward this scenario.

You have a very bizarre understanding of physics if you think there is any evidence to suggest this. Given that the universe (as it is currently) started expanding at the moment of the Big Bang, and that all laws that govern this universe are only applicable within the universe itself, we cannot assume they work when considering the universe as a whole, nor can we assume they worked prior to the Big Bang (if indeed there is such a thing as "prior" to that event). The earliest possible event we can reliably determine then, is the Big Bang, the expansion. Whether there was a creation event before this is unknown, and remains unknown due to the nature of that expansion, and the laws that followed it.

Coincidentally, no-matter what we assume about the laws of the universe (i.e. whether they existed prior to the Big Bang or not), you cannot rule out the possibility of the universe always having existed in some form. To elaborate:

If we assume the laws that currently govern the universe had always done so, then the timeless state of the universe prior to the Big Bang allows for the universe to have existed in some form for eternity, given that there was no "first" event (as there was no time).

Alternatively, if we assume the current laws did not govern the universe prior to the Big Bang, then there is nothing preventing the universe from suddenly springing into existence, or always existing in some form, since there are no laws to violate in this instance.