I was able to repay my student loan in full within a few years because a) I went to uni in the early noughties, when fees were only about £1,200 per year; and b) I got a well paid job as a city lawyer. My total debt when I started paying it off was around £14,000, and I think I managed to repay in around six years, eventually paying a lump sum to clear the balance. The removal of student loan deductions from my payslip was a bigger pay rise than any actual pay rise I have ever been given at work.
The thing is, for my generation it was worth trying to overpay the loan if you had a good job, because it was a realistic amount to clear. With the enormous loans students are required to take out these days, only the hedge fund managers of this world have a chance of paying them off quickly, so other graduates may feel the money is better spent on savings for a house / wedding etc. than to overpay student loan, especially when the overpayment won’t reduce your monthly deductions. But that means they are repaying the loan for years and years, including during the ruinously expensive nursery / nanny childcare years when they probably also have a massive mortgage and need the money. As a PP said, the student loan repayment is also money that won’t be going into the graduate’s pension, increasing the likelihood of an impoverished retirement and being reliant on the state.
Tony Blair trying to get 50% of the population to university has led to this mess. We should go back to having only a small proportion of the brightest A Level students going to university, with proper funding, and others being able to take jobs that don’t need a degree (removing the inflated entry requirements for entry-level positions which have only been introduced because everyone has a degree…). However, I don’t think that genie can ever be put back in the bottle (as it would involve universities effectively going out of business, with devastating effects on jobs and the local community), so politicians continue to fiddle while Rome burns. What a mess.