My grandfather, who lived with us, used to make his dinner in one every day. He'd take the liquid from cooking his chicken and veggies and save it for lunch the next day. I never thought it was unusual that he ate separate from the rest of the family for most meals (he kept to his own schedule), or that he at the same thing every day. He lived to 105.
I have an All-American pressure canner, and I managed to burn myself pretty good last summer while canning some beans. I was impatient and didn't wait long enough to open the thing. It took me a few weeks to not be scared of it and use it again.
I haven't tried cooking regular food in a pressure cookier, but I do see them using it on Iron Chef.