Edit: Also, for every "life is hard" millennial I have met many hard working, extremely intelligent, and charitable ones. Some of whom need to work multiple jobs dealing with the fact that our generation has almost no upward mobility unless you do something like learn to code. The fact that a terrible houses cost amounts of money that years ago would get you a mansion (even when adjusted for inflation) and where spending $100k on college does not even remotely guarantee you a job. Where pensions don't exist and retirement is a pipe dream. Every millennial I know over 25 has been laid off, some multiple times.
Edit 2: furthermore, in the United States, my generation has never known a time where we were not at war. And we are the ones being sent to those wars.