Hi Dave,
As has been said, around 80% of men your age have prostate cancer. Getting it is essentially a matter of being a man and living long enough. So it would perhaps be as well to assume that you do have it.
Personally, I agree with Lyn - get the biopsy. A TRUS biopsy is uncomfortable and undignified, but on a discomfort scale I'd put it on a par with having a filling at the dentist. I found the anticipation of the event far more stressful than the actual experience was!
If it does turn out that you require treatment, radiotherapy might perhaps be a good choice. It doesn't generally cause either incontinence or impotence. I had it myself in early 2019 and here I am two and a half years later enjoying life more than ever before. If you have any questions about it, I'm happy to answer them.
By the way, you mention being brave. I don't think many of us here would regard ourselves as brave! You get through it because that's what you have to do. It may be difficult to believe at this point in the process (and I was absolutely petrified when I was diagnosed), but everybody comes to terms with cancer and it just becomes the "new normal".
Very best wishes,
Chris