Thinking about it in a more personal sense beyond broader noteworthy events...
Everyone suddenly became a psychologist and started diagnosing each other with personality disorders right and left. lol. It seemed like spirituality took a nosedive as people were increasingly afraid of being seen as narcissistic, irrational, delusional, etc.
A positive is that people have become a lot more health conscious. I remember when I was a vegetarian in the 00's I was in a pretty small minority, and a lot of people still saw it as being, like, a hippie thing. Now it seems like everyone's pescatarian, vegetarian, vegan.
Marijuana has lost a lot of it's stigma too, and the war on drugs is starting to come to end.
People seem like they're simultaneously more hateful and judgmental than I can remember in my lifetime, and more socially conscious. Good in that people are thinking about broader implications before they speak, bad in that genuine human emotion and self expression seem to be stifled a bit as everyone's paranoid af of the lynch mob. I thought it was funny that what someone mentioned as being representative of this decade in terms of major events was basically just a list of people snapping and shootings. I mean, obviously that's not "funny" but. Speaks to the polarization of the time.
My personal life has been somewhat uneventful in a milestone sense. In the 00's I graduated high school, went to college, started a career. This decade I changed professions and moved a few times, the last out of state, but a lot of it has just been... coping. With sh*t things that have happened, my own anger, and the anger that just seems to be everywhere. lol. (And all the terrible music. Can someone please tell me how music is in any way good right now?! xD I kept seeing that declaration. Most of it sounds exactly the same, like a deep track on an album that's just basically filler. Danielle Bregoli got nominated for a Grammy. I mean, wtf).
I'll probably look back at the 2010's with some nostalgia, but I do hold that it's basically just a continuation and evolution of what originated in the 2000's. I mean every decade is when it comes to those before it, but this one seems to be especially so.