Yes, my age and diagnosis pretty similar to yours. I'm still here 3.5 years later, hoping I'll still be here in 20 or 30 years time. If your bone scan is clear (which with a psa less than 50 it probably will be) then with radical treatment you may be cured.
Quite a few people on this site 10 or 15 years down the line, and don't forget the internet has only been available to most people for 15 to 20 years. So if you took a true random sample you would find your odds are quite good.