Sheba I don't know how you've inferred that i think she should 'default on her loan' - which is not how students loans work anyway, as so many other PPs have said it's more like a tax - just because she's reproduced.
I don't think that having children is in itself the same as contributing financially to society. I still think it's contributing to society though, in a different way. And it does (often) produce future taxpayers, which is good for the future of the country.
I think raising a family well, with love and care and security, is work, and it's valuable even though it's not paid. And I agree with a PP that we need well educated, well rounded people raising families.
I have no hand in this game anyway. No kids yet and I started my reasonably well paid job about 3 days after I graduated. Started paying my loan off at the beginning of the next financial year, have worked ever since.
As an aside, a vast amount of people never earn enough to pay for the education they receive, the healthcare they use over their lifetime and the pensions they collect. Especially as it's not uncommon these days for people to collect their pensions for 30 years. Someone more knowledgeable than me will be able to quote the level of salary at which people 'pay for themselves', but it's more than lots of people - especially women, for lots of reasons - earn.
There is no need to despair. January is almost over and it's the weekend - reasons to be cheerful if there ever were some.