Lotta shit is unexplained, just the nature of our bodies major systems. That all have a specific job yet work in perfect unison, is something that is evidence enough to suggest that "we" aren't random. That we are by an intelligent design, and I think maybe 90% of the people on this planet agree with that.
The issue comes with, designed by whom and to what end? And everyone has theories and beliefs. But there isn't absolute proof on any spectrum unless there wouldn't be skeptics. Like Oxygen is an absolute that no one denies. There is absolute evidence of its existence, where it comes from, it's importance, and what happens when there is none.
You can't say the same for our existence, so why not just let other people believe what they want to believe. Another man breathing doesn't stop oxygen from keepin u alive, unless his reason for breathing is to stop ur breathing.
And in that reason I can see why you preach, and take it to heart. But outside of that,
We're on a giant ball of gases and rock, one of over millions and millions of billions. And no one really..really.."knows" why.