We have members on here who were diagnosed with very similar stats to yours, had RT/HT and are still here in excess of 15 years later. I think George H might be coming up to 20 years in 2023 despite a recurrence a few years back.
Your doctors are offering you curative treatment with the aim of full remission. There is no reason for you to be thinking of death with these diagnostics; I think sometimes doctors use words without making sure we understand what they mean .... 'aggressive' cancer sounds like it is rushing around your body, spreading like wildfire but that isn't what aggressive means in the context of prostate cancer. Prostate cancer is described as 'aggressive' if your PSA is more than 20, your Gleason score is more than 8 and / or your staging is T3 or higher. It would be better if doctors used an alternative phrase as they don't seem to realise how frightening some men find the word aggressive