The LIA lasted about 550 years, quite a few generations of humans lived and died without ever knowing the joy of a winter that didn't cause mass death.What evidence? There is nothing catastrophic about the warming we are experiencing. No alarming sea level rise, no increase in hurricanes, tornadoes, fires, droughts, floods. Just what one would see in a warming world coming out of the LIA.
Warming should be welcomed with open arms, it might not last very long, especially if it's left to humans to control.