WTF why would tenants be running 20%+ debt?
0%. Anything over that is stupidity
Excuse me? You've never borrowed anything? Have you a rich daddy or something?
I'm a tenant - at certain times of the year my overdraft is invaluable. Re borrowing money to build infrastructure and assets - if I can see a payback in not too many years, or efficiencies gained that increase profits, then I'd be pretty stupid to ignore such opportunity. That said, I've just worked my D:GW out, and it's under 20% - I don't advocate borrowing up to the hilt for the fun of it.
By default of being a tenant, I have rent to pay, which effectively reduces my spending pot by a fair bit, compared to a paid for owner occupier.