We try to maintain a false dichotomy where the alternative to working extremely hard is partying, travelling the world, and of course tons of sex.
Most people don't do either.
It's not necessarily a false dichotomy, but there ain't no such thing as a free lunch: there are opportunity costs to both paths. If you're dedicated, you can work out a way to fill your hours with travel and hedonism: and then one day you wake up and you're 40, you have no close friends or career prospects, and a worn-out liver.
When it comes to living life I'd rather go with 'A bird in the hand is worth two in the bush.' And I say this as someone who's worked hard in their 20s to let go of nerdy and awkward behaviour to be able to more fully enjoy my life NOW.