I saw a story on CBS news tonight. 70% of all new and refinanced mortgage loans in CA are IO. It''s like 53% nationwide. When we bought our first house in 1982, we had one option, 30year and we went VA because my DH was an Ensign in the Navy and we were making squat and we could finance all the closing costs. There are so many loan plans available now. No money down, first time buyers plans, IO, 15, 30, 80/10/10, ARMS, etc. IO''s, according to a well known financial planner who spoke at work recently,are great if you can afford the loan with principal but choose to invest it elsewhere. Those that get in trouble are those that use them to stretch to buy the most house possible, which could backfire if for some reason you can''t refinance or move before the principal also kicks in.