There are many ways (outside the scope of this forum!) to have sex that is enjoyable to both partners, and not all involve penile penetration.
I find that I now last a lot longer than I used to, and because of that sometimes don't orgasm. However even so, I still find sex very enjoyable. Like eating a cake but not having the icing! I suppose I could call it Tantric, but have never thought of it like that.
As the post says, experimentation is the key. We all differ in our level of ED, so it's a matter of trial and error to find what now works for us. Things are certainly different to what they were before, but need be no less pleasurable.
Age 63. Other than cancer, in good health; BMI 20
Pre-op: No symptoms; PSA 5.7; Gleason 4+5=9; cancer in 4 of 12 cores
7 March 2008, RRP, non nerve sparing
Two nights in hospital; catheter and staples out after 7 days
Continent, no pads needed from the get-go
Post Op: Stage pT2 M- N-; clear margins and lymph nodes; Gleason 4+4=8; prostate weight: 37gm
6-week and 7-month PSAs: 0
Bimix injections working well