Eh, this is something I've thought a lot about; I funded my company doing consulting. ($100/hr is a pretty good rate for me, - I /have/ gotten $200/hr, but that was short-term stuff. Most of the time I'm $75-$100/hr, but that's still a lot of cash.)
Now, there are reasons to stick the cash under your mattress (or in an index fund) - that's not the choice I made, though; I chose to buy some means of production and manage those means of production myself. Not real-estate;servers. I had a few pretty good years; it really has yet to be seen if I'm a fool or not.
I do think it has been interesting; I've gotten to experience being a boss. I've hired family, I've hired friends. I've hired people who weren't friends, who became friends after they left. It has been an experience. It's really yet to be seen if this experience has been profitable or not. Estimating the value of a small company is difficult, and one could reasonably value my company at a level where I have done okay (not never work again okay, but at least buy a nicer condo okay) - you could also reasonably value the company at the 'buy a compact car' level. The only solid offers I've gotten were earn-outs that were heavily dependent on me sticking around for years, so it's unclear how much of that is the company and how much of that is, you know, me.
But yeah; the other option would have been to just contract half-time and spend the rest of that time hanging out in social situations. That would also have been a really interesting experience. Maybe it would have been better than what I did? I don't know.
Now, I'm not chasing investors or anything; That is a very different game. But it is a mistake to equate the hacker news crowd with funded startups. Yes, that's what everyone wants to be now - but that's only because of the amount of money available. Go back three years and it was all about bootstrapping.