I was born in 1981, a day after Reagan took office. I consider myself more millennial than X, although the label Xennial is pretty appealing and I think it is pretty accurate for people born between 1977 and 1983. The Star Wars babies, the kids old enough to remember pre-internet/social media and analog technology, but also tended to enthusiastically welcome new technology and the advent of the world wide web. The kids who were promised the world at the turn of the century (many born of boomers who just assumed their kids would have it as good as they had it and reinforced this message ad infinitum), but became disillusioned and jaded by the international and economic crises of the early 21st century. Millennials, especially the elders, were in my opinion the last generation to care and the first generation to give up--or maybe the Xers gave up first, I dunno. Most zoomers I've encountered (my son, his friends) are not overly pessimistic, but just seem to have this resigned attitude about the state of the world, that it's already fucked, and they're just enjoying it while it lasts.
My problem with boomers is they have overstayed their welcome. It's not that their old age is the issue, but the fact they continue to hold so much sway and decision making power, often benefitting their own fears and morals without caring how it affects the younger generations. Look for instance at the generations Presidents were born into. We had a decent number from each but it seems like every President since Clinton has been a boomer. That's more than we had from the WWII generation. Time for new blood.