Anybody who says Science doesn't assume PSP has already lost all credibility in my eyes. You are a product of all the cons associated with the indefinite subscription to skepticism.

PSP <=> principle of causality => a cause for the universe and since the universe exist => God exist. I recommend the reading up on one of my favorite mathematicians, Leibniz. He will give the technical reasons for why this is true (because I can't be bother to do the formal proof).

Besides that, I pray that God grants you guys the wisdom and understanding necessary to find him (I truly do) because currently I suspect that you lack these things as your technical arguments are significantly misinformed to say the least.