I think you answered yourself, in a sense. Our ability to commit is deteriorating, but the reason why is (partly) the risk of commitment itself. You risk being hurt or disappointed if you commit to the wrong event or wrong person. Figuring out what's "good" to commit to is possibly more individual than we realize.

I personally find it weird when people talk shit about someone being unwilling to commit, as if one should jump straight into serious obligations without any forethought. You didn't do that of course, but I see it come up in discussions sometimes, mostly concerning relationships. Commitment is more complicated than most people see it imo.