Sexy attractive wife hit 53 and q u i t !

I married a very sexy and very experienced girl in her late 30's - I'm 8 yrs older.
This very sexy woman had a very sensual mind - loved flirting, flashing her panties, loved sex, etc. 2 kids (now grown) -
at 53 she QUIT. Full stop. Rarely touches me, the dog or the kids. Kisses me hello and good-bye every day ....like a sister. Gets pissed when I call her "sis"
No tongue in 16 yrs!
Haven't seen her nipples or her vagina in 16 yrs. She did agree to stop wearing walking shorts to bed.....back to her bikini panties.
She says it's OK to touch her bottom, nothing else. But it is like touching a woman in a coma. I love her cute butt - but it just gets me horny - for no reason. She says nothing I say can turn her own, nothing I can do, etc.
Apparently she no longer masturbates - I dare not ask!
Reads her Bible daily - skips over the part about a wife sharing herself with her husband. Won't watch any R rated movie.
I masturbate to old photos of her 4 to 6 times a week....remembering how it used to be between us.
She said she won't take anything - " it all gives a woman cancer!"
She's damned lucky I haven't found a woman to touch! I never will. I stayed mad at her for 7 or 8 yrs (inside - but hard to disguise) .....prayed daily that God would take away my desire for sex - to match her lack of desire for intimacy - sadly - it has been another 10 yrs and I still get horny!
She's a very attractive woman.....says "Thanks" when I tell her that a few times a week.....
She's a Godly woman - waiting to go, I guess. 66yrs old. Won't discuss seperate beds, or our lack of intimacy.
About 5 yrs ago - I came in to find her standing in the kitchen waiting for me in a little sexy nighty and bikini panties. I sat in awe, touched her gently, kissed her breasts.....took her to bed and actually was allowed to put a finger in her pussy (I didn't think I'd EVER have a finger in any woman again!!). I rolled her over and encouraged her to mount my pillow to rub herself to an orgasm ---- her fav thing to do in the old days. She did - and had a powerful orgasm! Then she fell asleep. I masturbated looking at her naked crotch.
2 mos later she said she'd no recollection of it. The impression I got was that she did it because she felt sorry for me.
I'm not leaving - nor ever visiting a hooker, so - it is me and my friendly R hand riding off into the sunset!