If that's your plan, then you are depending on Social Security or whatever social programs are available when you retire.
I'm going to make it happen. Somehow.
I understand that everyone's financial situation and aspirations are different. YMMV.
Seriously though, when are you going to start a company? There's at least 4 of us (Kevin M, John H, Dave N, me) working on 3 startups in SF. Join us!