Earlier quoted context omitted.
I think maybe the only real way to know what the cost benefit might be for an individual is to just ... go work for a while and then see what you find in your experience and life. Then you're making a much more educated calculation as far as what you think it might get you, and if you want to go back to school and that. Just throwing that all on the front end while you're in school seems a bit like gambling.
The only advantage I can see to going for an MS straight out of undergrad is that your lifestyle should be pretty low-rent. But doing grad school because you're good at school and don't know what else to do is a trap lots of otherwise smart people fall into.
On the one hand, I learned a lot from graduate classes and also used graduate school lifestyle/loans/insurance situation as an excuse/umbrella to explore a startup opportunity (that didn't succeed).
On the other hand, I sometimes regret the opportunity cost of not seeking paid employment sooner, especially given the non-success of that startup attempt versus how much I loved the last employer I interned with in undergrad versus graduating in a major recession I likely couldn't have predicted. The majority of my student loans have been from the graduate semesters and it does often leave me wondering if it was worth even the financial cost.