To answer the OP, it depends on your financial situation going in and where you live. In a HCOL city, the raw numbers suggest you will probably be fairly stressed financially on your own. I'm going to go out on a limb and say that a lot of med students are getting more help from family or partner money than they will admit in person or online. Most of my resident friends live fairly well. We're talking HCOL or VHCOL cities living in recently renovated 1BR or 2BR apartments with nice amenities and 1-2 vacations/year.
I have visited friends in NYC, Boston, Seattle, DC, and LA, and the numbers simply don't add up. I live in a HCOL city (think same order of magnitude as Seattle, Boston, DC, SD, LA, etc...). Between stipend and fellowship bonus I make $41K as an MSTP student, don't have any student loans, and it's
impossible to live without roommates.
My budget basically looks like this:
Post-tax take home: $33K ($2750/month)
Rent: $1000, and I live with 3 roommates in the sort of neighborhood where the cops raid a house and it's not really even a topic of discussion.
Utilities (internet + gas + electric): $150
Cell phone: $75
Groceries: $250
Other food (e.g., social eating): $150
Daily Transport: $100 (monthly pass + bicycle)
Out of state travel (e.g., visiting family): $100
Household necessities: $100
Misc (laundry, healthcare, gifts, cat, etc...): $200
IRA contributions: $500
Total: $2625
So with no car, roommates, and an apartment that doesn't even have in-building laundry, I'm paycheck-to-paycheck, though I am able to max my Roth. It's not glamorous, but it's also not horrendous. A resident making $65K in Boston/DC/Seattle is taking home ~$52K or $4300/month. Add in student loans (~$500/month), and you've got an extra ~$1100/month. That basically gets you to no roommates in a very cramped 1BR, never mind a car or any sort of slush fund for vacations. The only way you're living well is if you've got no student loans and don't worry about retirement contributions at all. Then you could be living in a $2200/month 1 BR apartment (renovated, in-unit laundry, decently spacious) and have $500 to throw at car payments insurance.
So yeah, I'd say that residency pay won't take you very far in a HCOL city. You will do better in MCOL or LCOL, obviously, but overall I'd say that as a resident in most places you'll think about money daily.
I think two things that make a resident budget much more manageable are 1) living with a roommate and 2) commuting, but a lot of people don’t want those for various reasons personal to them.
I think this is reasonable. I'm currently 30 and living with roommates as an MSTP student. It just gets worse as you get older.
1) Good roommates are harder to find.
2) It cramps your social life
massively. Not a big deal when you're 25, but good luck having your married friends over for dinner at 30+ with roommates.
3) People suck and will absolutely use this as a way to cut you down and feel better about themselves. This is true to a certain extent for all physicians while going through residency (unless you start at 22, finish at 26, and finish residency by 29-30), but especially if you don't have outside help and are struggling financially in your 30s. It's free ammo to anyone who wants to feel superior to you for a moment. I can't tell you how many nasty comments I've gotten from extended family (cousins, aunts, uncles, family friends) mocking me for being as poor as I am despite my accomplishments. I'm pretty sick of it.
Having a long commute during residency is also a big no-no if you want to stay sane.