About one out of every five home loans at three big Canadian banks are now negatively amortizing, which happens when years get added to the payment term of the original loan because the monthly payments are no longer enough to cover anything but the interest.
It can, if you make good money, says 6000$ after taxes per month, you can rent at 1500$ and invest 2 or 3k per month and it can be better than having a mortgage for a big house and paying like 4k/month, I think.