Exactly, I used to think and practice like the OP did. You find that all your friends start transitioning into couple things and you are a workaholic who doesn't have any interests outside of work. Sure, that is fun and it will be exciting to spend all your time solving the nth problem in your work BUT life is not just that. Life is experiencing everything, yeah all that yada yada about doing it in moderation holds obviously but still. You can't just live your entire life, hope to be interesting to a wide range of people encounter adventures if you isolate yourself and not do any of this!

Totally agree, everything in moderation, though.

I'd rather live with the regret of 'Oh I wish I hadn't done this/that/the other' than being 50 and looking back on my life regretting I didn't enjoy myself more.

Speak to people over 60, they generally regret what they didn't do than what they did.

People who don't live to 60 generally would have regretted things they did rather than things they didn't.

Obviously, if you want to live as a simple cog there's no one stopping you. :)

I'd say, enjoy it, just be safe (don't endanger yourself)

And drugs are bad mmmkay. (I don't advocate, still, let's hope people know what's their limit)

Except the 'don't have a girlfriend' part, do have a girlfriend!

Health can rapidly fail and if you are unhealthy at 25 you'll be dead by 40.

Be as healthy as you can as early as you can because it doesn't get easier as you get older or have a family.

Bad habits are cumulative, you can't fix poor health just by stopping certain habits.