My thought in regards to the origin of the universe is the theories backs into unprovable assumptions.
No, It doesn't. It backs into ignorance.
That you think they are assumptions makes me think you believe that scientists treat cosmological theories as a matter of faith - so they are 'believing' things about which they have no information.
It doesn't work like that. These theories are just our best current understanding of how things are. Our current theories *will* change. They are used as a guide as to which problems to study, and a context into which to fit results and new theoretical developments. They not sacrosanct and a scientist does not have to 'believe' them. In fact we know they are incomplete, and in some areas very speculative and probably wrong.
Edited by Richard Townsend, : No reason given.