That's a valid vent.
But because we're not robots, it's different for everyone.
Some are continent within milliseconds. People like you & I are still leaking months afterwards.

The catheter was no fun - neither is incontinence.
But you know what else is not fun? Being dead.
I've always said that I feel lucky it's prostate cancer.
Why? Because if it was bladder cancer or lung cancer or something, I couldn't just say "Meh... take it out".
But with prostate cancer, we can.
It's still worse than not having cancer at all, but we're better off than some.

In terms of incontinence, ED etc.... it's just part of it. The main thing is getting rid of the cancer.
I know just was well as anyone else here what massive pain it is to leak constantly.
But there's a lot of support & ways to deal with it.
We just have to get through this, one challenge at a time.
The alternative is to do nothing. That option rarely ends well.