Ah well, time will tell, I imagine. :-)
If you want weird, edge-of-reality stuff that's fun and mostly safe I recommend the book "The Secret Life of Plants" ("Life" not "Lives", that's a different book): https://en.wikipedia.org/wiki/The_Secret_Life_of_Plants
I agree it's foolish conjecture and I believe we are certainly not "alone". I had an experience when I was 10 that infused fear and curiosity in me.
I'd like to say I am hopeful about our future but we are just evolved organisms from a long chain of creatures designed to compete for survival... it's in our own nature to self-destruct.