Even if you ignore all that, I think you just need a break, rest, recover, find something else in life and move on. The whole thing about "life was better in the past" is just plain non-sense, simply because the past, for all we know, extends to infinity. Why 1980 and not 1890? or 1590? the inquisition? maybe the crusades? or maybe the pharohs? If you believe in biblical tales then how about being in the great flood? or being one of the pharoh soldiers that die after the sea moses split closes on them? or one of the skulls in gengis khan's tower of skulls?
You can read Steven Pinker's "Better angels of our nature" and get a good sense of how far along have we come.