Well, its a 40 year repayment period, so no one, unless on a v high salary, over 30 has any chance of paying it all back.
I think everyone should have the chance to go onto FE/HE, education should be a right and of course a responsibility too.
I had free FE, it enabled me to work abroad and pay higher rate tax, it then meant i could do the best for my DD, no working benefits and she is back in the NHS, earning almost 39k and paying the tax that goes with it.
She was the first in our family to get a degree.
I would never have gone to college if i'd had to have paid it back, the enormity of borrowing that amount would have stopped me, that would have meant i stayed in low paid work, on benefits and doubtless i'd have encouraged my DD not to go too.