I listened to a podcast about this, it went over a bunch of differences. I don't remember the exact numbers so I will try to avoid them.
Controlling for inflation and wage growth:
the cost of buying a house has gone up 2x, even with a lower interest rate, the amount of interest paid has gone up 4x or 5x. They also brought up that many of our parents still had a generational home some of them could live in and take over, now days that percentage is much much lower.
and even beyond the cost, getting approved for a loan has gotten ridiculous, where you end up with situations where even if you could afford the loan, you can't get it. The banks don't care that you have paid $2,000 dollars a month for 5 years of rent; they think we can't handle $1,500 loan payments. its counterintuitive.
there are far more added costs this generation pays that the previous never had to pay for, health insurance being a big one, but even phone/internet is a completely new phenomena the previous generation didn't have to account for until they were older and established.
I can't remember the percentage but the amount of "unspent" money that hits our bank accounts are a lot smaller now.
and a lot of the soft skills haven't been passed on that could help. growing your own food, its easier to pay less on food if you grow it yourself, our generation was never taught that. same thing with making or repairing clothes, or other small household items. with chips in everything there isn't any real way to "fix" most problems. this is a lot of the reason the "trad" life style is becoming a thing, even on SM. its an almost completely lost skill set, because it pretty much skipped a generation or two, and its not something any of us grew up with.
even in the job market the expectations have risen considerably. on the job training is not a thing any more. There isn't a mindset of you can come in and prove yourself. you can't get any professional job without a degree, and even being a manager at a store requires a level of education that most of our parents never had.