MDG:
I also agree with you.
Many kids do take out loans. But most are also single.
Parents who appreciate grad school see it as an investment.
Parents who appreciate learning see it as G-d’s will.
Posters who do not appreciate learning, or more often, have a different hashkafa about the primacy of learning versus secular education or other money earning pursuits, do not see learning as worth supporting.
All of this is fine.
The only thing which is not fine is when people inject their own hashkafos into someone else’s decision, and decide they are therefore being victimized.