I echo what has already been said about doing side hustles if you don't yet have kids. You don't know busy till you have kids. Today I woke up at 5am, went to work and busted out everything I could do till 2pm (ate lunch at my desk while attending a meeting), then came home, fed and let the dog out and went right back out to pick the kids up. Got them home and helped with homework while I made early dinner, then got the both ready and off to wrestling practice which starts at 6pm. Back home by 7:30 and get them final post workout food, pajamas, off to bed. 8-9 I'm drinking a beer and reading some email, dicking around on the internet like I am now. I'll be off to bed by 9 or so.
Everything else fits in around work and family. Not every day is 14-15 hours but every day is at least 12 between work and kids. And if I'm taking off time for biking or whatever my wife isn't so it has to be balanced. I also do a side gig that netted $30k last year but if I'm doing that I'm taking away from either hobby time or my wife's downtime.
All of this is a roundabout way of saying you have a LOT of time if you're single or partnered up without kids. Work some, enjoy some, and STFU about not having enough time. :D