without having actual proof.

Nobody,ever,anywhere has had "actual proof" of anything.

All we've ever had is reasons why we should think one thing rather than another. That involves having some kind of decision- making process that says one thing is more likely than another. So we have ideas about evidence. Note the "we". Everybody is allowed to see. You just gave to educate yourself enough to see what is the difference between more likely and less likely.

"I'm just kinda thinking of the damage they're doing to children, young people and adults in deluding them.."

Kids ask "why"... "why"...

So do scientists. They have answers that fit the "why", with evidence. Holy basketfuls of it, including "what went before life" (they don't know, but the evidence shows it could have been...") and "what went before the Big Bang" (questions about what "before" means when time doesn't exist). And like kids, each answer only brings another "why"...

The only damage you can do to kids is by stopping the questioning, and scientists are really just big kids.