quick cooking

I only now discovered how absolutely wonderful a pressure cooker can be!!!
As I live at 10,000ft above sea level, my carrots never really cooked. A stew took two to three hours to become edible. Last time I tried dry beans, after more that four hours of cooking they were still little rocks.A friend walked in, took them, and returned ten minutes later with nice chewy pulses, ready to be tossed in a refrito. I was hooked. I went out and bought one. (After having lived here for 30 years...)
WOW! I make excellent osso buco in 40 minutes. Chicken soup or stew, even with totally frozen chicken. Beef broth.A friend even made Matambre. My carrots finally come out cooked. And my beans are consistently lovely. All of these in under an hour. Gone is the anxiety of having to stay and watch out for something!!!
How come I waited so long? Maybe because finally three people at the same time told me about its advantages?
Yes, I've put aside total vegetarianism for a while.