You are now looking back at a significant part of your life and that is changing your perspective. Not only are you not going to be younger in the future, but you may not enjoy the agility that you had, good looks, and all other niceties of youth.

Our western civilizations do not value age that much these days, it's not a good fit for the always-on high-throughput life required to not go under.

Some get lucky, married, have children, which yet again gives you a different perspective on life (and you start to see how little things matter that you thought matter). This can be a significant impulse through your 30's and 40's.

A guy I know is forever single, about your age - a cultivated man, who enjoys a few recreational activities, but who also wastes a lot of time (something people with kids cannot afford any more).

Not sure what has been driving you, but with a nice chunk of savings try to cut back on stuff you do not really value for a few years and try to refocus on a thing that captures your spirits, whatever that may be.

You probably need to let life capture you again, in its weird ways and I see some people just not crazy enough to allow themselves to.