A sad thing about life is that after squandering ten years on playing in bands and stuff (point 11), if you eventually do get your act together and go to university and then (point 16) take the default route to a job in a big company, happy to make a living at all; after a while, if you have half a mind, you'll end up realizing that you're getting dumber by the year (point 14), but by then you've also stumbled into a family, and a start-up is no longer a realistic option (point 9, 13, and maybe even point 12 has kicked in). But then it's just 25 years to go until you're retired, just clench a fist in the pocket, produce a smile and keep coding for a salary.
Sorry.
Or alternatively you spend 8 years in the military, 4 years in a big national Telco and then you're 33, with a family, and even PG saying you shouldn't start a startup.