This is such an important point. As a father of two, children are turning out to be a very large investment...larger than anything else I ever will pour money into, probably by an order of magnitude (though not quite, since I have a house).

I talk to lots of people in SV, heads of design, engineers, as well as folks from around the world that I work with, from San Diego to Argentina and Chile. So many 20-30 year-olds have told me they are never having kids. Life is too fun, and they want to see the world. But training the next generation is hard work, and it's easy to do a terrible job. We want to incentivize people to have kids and be great parents. But that requires voluntary sacrifice, which is a hard sell.

If I hadn't had kids, I could retire now. As it is, I'll be lucky to be able to work and get a job so I can earn for the next couple of decades so I have enough to retire.