Hi and as Phil said, welcome to the incurables club!
Firstly, although being given '2 to 5 years' can feel like a hammer blow, they're just guesses made by the oncology team. I was diagnosed at age 54 with inoperable stage IV PCa with multiple metastases in my bones, and I was given a life expectancy of 3 to 5 years. 6 years after being diagnosed, my cancer's still spreading (slowly), but I'm still fit and fully active, going for long walks with my wife & family, and riding my motorbike when the weather's half decent.
In terms of treatment, I would suggest pushing back a little with the oncology team and asking what they would recommend: they must have some idea for the best options based on your specific disease progression.
For what it's worth, my treatment history after being diagnosed in January 2019 was as follows (surgery was not an option as my cancer was way too advanced):
- immediate start on hormone therapy (a Zoladex implant every 12 weeks). This stops your body producing the male hormone testosterone, which is what prostate cancer cells need to grow
- after 4 months hormone therapy, I had 6 sessions of chemotherapy with the drug Docetaxel (one infusion every 3 weeks). This aims to kill off cancer cells.
- a few weeks after finishing the chemo, I had 20 sessions of radiotherapy targeting the primary tumour in my prostate. This again helps to slow growth in secondary tumours.
You can see my full treatment history in my profile. Most of my treatment was easy to tolerate and manage: the chemotherapy has the strongest side-effects, but back in 2019 it wasn't bad, just made me feel ill like I had 'flu for a couple of days at worst.
Do ask us if you've any questions about your cancer or treatment options: chances are someone here has been in a similar position to you and can help. You're not alone.
All the best in the meantime.
Craig