You write: "Just compare the number of your beliefs and opinions with scientifically provable truths or near-truths. ...as I'm concerned, my beliefs and opinions probably outnumber what few truths I know by probably billions to one."
For me the only thing science does not, cannot, and never will by definition be able to prove or disprove is the existence of Spirit (as in animism).
Me? I believe such a force exists. Beyond that? Total bewilderment...
This question or these questions about 'truth' tend to confound me totally because I find the the term (especially when presented with a capital 'T') simply too ambiguous to do anything with.