Let me put it a little differently. The interest rates over the past 5 years or so have been at historically low rates. When I bought my first house, 40 years ago, I was super happy to get a low rate at 8%, and they went up from there.
This house that I got about 3 years ago I'm at something stupid like 2%, really stupidly low. There is no way that I was going to get an adjustable rate at that point, because the ONLY direction is up. It may have saved a few bucks for a few years, but the downside is huge.
But that again is part of the learning process. Adjustable rate mortgages are great for the banks when the interest rate is low. They are great for the consumer when interest rates are high. Even today, interest rates are low. With the US Fed rate at about 5% it is still a bargain as opposed to what it has been.
Fed's Interest Rate History: The Fed Funds Rate Since 1981 | Bankrate Scroll down and see that current rates are pretty average.