oops, don't get me wrong, I absolutely agree that mature students are often the most committed, motivated and enthusiastic of all students. And I would like to see more of them. My point is (I'll see if I can find a link) that they're also among the most likely to drop out of university largely because of financial and other commitments.
As I said it's an awful lot harder living without money and getting into debt when you're in your 30s than it is in your late teens and you're much more likely to have dependants.
It must be very difficult to weigh up the advantages of going to university against the debt and likelihood of being less able to deal with family responsibilities. The potential financial advantages after graduation (greater earning power) would be less the older you are too IYSWIM.
Certainly, I don't think I could go to university now for 3 years spending savings on tuition fees and not earning anything durng this time (and then add on a year for a PGCE) purely because of the burden this would place on my family.
Now I'm not saying that students shouldn't go to university when they're mature. Very far from it but IMHO its much more sensible to go when you're young where possible. When you can live more cheaply, have fewer responsibilities, have the rest of your lifetime to reap the financial advantages of being a graduate and pay off the debt in good time to start thinking about saving for retirement.
Of course, you can be happy without money but it's a hell of a lot harder especially as you get older and as I've said you also have the happiness of dependants to consider.