The average age of diagnosis is 67 and 95% of those men live as long as you would expect them to normally. It is certainly not cured, and treatment can be very disruptive and unpleasant, but it's definitely not "extremely deadly" with modern medical care.
It makes up for that in being common though. The most common cancer in male non smokers and fifth leading cause of death worldwide (presumably amongst males https://pmc.ncbi.nlm.nih.gov/articles/PMC6497009/)
> live as long as you would expect them to
We also need to think about quality of life, which tends to go way down after you're diagnosed with one of these diseases
Prevention and delay is significantly better than management or even curing
Not being extremely deadly is low bar since most of your life (with some luck) will be spent being old. I'd rather see my years being more than bearable.
Perhaps not but when it is aggressive, it is very deadly. They told my dad they were thinking he could have 10 years, he got three. Seems like when it stops responding to hormone suppression things can deteriorate quickly.