My dad had prostate cancer, and really, it's a very treatable cancer that is not prone to spreading. Especially in older men, they're likely to just leave it alone, because if it's not going to spread, and it's not affecting them... why mess with it? My dad was relatively young when they found it (57), so he chose to have his prostate removed. It's a less major surgery than it used to be, but it's still major surgery, and if you don't have to do it... why do it? For a lot of men, unless it spreads, old age will claim them before the cancer does.

That said, my dad has had all kinds of after-effects from the surgery. He's had surgery on his bladder neck 4 or 5 times now, because his body is over-healing and eventually the scar tissue cuts off his bladder... so, yeah, if something like that can be avoided, it's best to. A lot of men are living with prostate cancer, it's not as uncommon as you might think. Two of my grandparents died from cancer (lung and pancreatic), and others have died from stomach and ovarian cancers, and, I mean... I know what somebody with cancer looks like. And my father never once looked sick. Prostate cancer, if it's caught early and is contained, is a very different type of cancer from many of the others.