I think I want to bump this pretty soon; I spend more than my $2k/mo take-home on car payment + gas ($1k+), food ($500-$1k; I buy expensive/healthy groceries), exercise ($200-500/mo), (free rent), minimal toy/entertainment budget, etc. -- if I didn't have savings and credit, living on $2k/mo would be a big distraction.
Founders making $120-150k+/yr early seems like a distraction too, but I don't think $60-90k/yr is totally unreasonable in the Bay Area.