The real life crisis is imagine how utterly lost you will feel when by 45 you aren’t married, no house and no kids.
I know single people at 45+ unmarried, no property, no kids who seriously think in the next few years they are going to settle down and start a family. They’re also the most unstable people and highest substance abuse by a mile.
I have had young blokes ask me how I got to where I am and I say getting married in my 20s and a kid at 30 is how I got here. Without that change of maturity and responsibility early on, your purpose is basically indulging just yourself.
You can buy a motorbike at 40. You can take a trip to an Italy at 50. You can’t use a Time Machine to go back and be a young family. This will fuck you up mentally more than physical changes.