First, this entire time I've been talking about household expenditures--two or more persons, not just me, since that was the scenario in the OP to which I was responding. I don't spend $450 a week on myself. Jesus christ. And Nebby, FWIW as I said in law school I often spent less than $200 a week on myself (I probably was never quite as low as $600/month, but maybe $800-$1000). When you're scaling to a household, things change.
Second, some people like Mono and riotgirl have acknowledged the pretty basic point I was making that attorneys in biglaw with a working spouse live differently from college students--call it golden handcuffs, but I'd assign more of the blame to time factors, lifestyle maturity, and cultural factors. Maybe I was unfair to say "no couple" in biglaw lives on under $2000/month excluding rent in a major COL area, since some people are probably hyper frugal, but the vast majority of folks will go out for a handful of meals a week and will go out a couple nights a week for some form of entertainment, may it be bars & clubs or the opera.
Third, I don't have significantly idiosyncratic lifestyle expectations due to some outside source of funding, which is the insinuation. I'm not independently wealthy and I hold all my debt, commercial and government, personally. Shit, I haven't even seen Hamilton. But lawyers at big firms aren't poor and in the overwhelming majority of cases don't act poor and the danger here is projecting "I'm going to make a million dollars in five years" or some such silly outlook without being at all realistic about costs. If you're thinking about going into biglaw, you'll probably be in NYC, or LA or SF or DC or Chicago. So if you're in a couple you will spend a certain amount on rent, on food/drinks/entertainment/travel, on student loans. so plan accordingly