Just so I'm being clear, marriage can be a wonderful thing if you get married on your terms because you love someone and want to make that commitment, but is not an anti-depressant. If find someone you want to marry, then marry them. But do it because you want to and not because you were pressured to do so or told that it was the key to being happy in life.
Far from curing existential dread, I find relationships make you worry for the end of yourself and
your love one. A worry that can be well worth having in a loving relationship.
And don't let people tell you need a man to be happy because of their low-key sexist and homophobic worldview. *side eyes* Don't let anyone tell you not to get married or love someone because of their off kilter views on relationships. Love because you want to love, as an end unto itself and not a means.
Old people got divorced in a mass wave as soon as no fault divorce became legal. I have multiple old people in my life who have families and children they love and exes they despise, and relatives trapped in abusive relationships because bof that "stand by your man" bullshit. You are actively telling them that if they don't have a relationship they will be miserable, and trying to FoMO them into marrying young. Please don't.