What a fun thread!
I am an old fart (70s), and with that comes a lack of endurance, petty pains, etc. but at least for me, no loss of sex drive. I don't like to waste an orgasm masturbating because it is a lot less pleasurable than shooting my wad into a horned up donkey or mare. So I edge a lot while watching videos of men with female animals, then go out and enjoy humping my girls.
Often I will do two girls together, especially the donkeys by alternating back and forth between them. Since I take a long time to climax, this keeps them from getting tired or sore. Even then I still tend to edge, sometimes because I want to extend things, and sometimes because I haven't recharged enough to cum yet. Generally, I can only cum (while fucking) about every other day, but I fuck pretty much every day, usually several times.
In my youth, I did none of this because I could recharge in minutes. Back then I sometimes remained in a mare and just stopped humping for a few minutes, or I would go to put the bucket away only to do a U Turn and revisit my lover or another one. I would often bone a girl three times in quick succession. Even back then, however, I would often get back to the house and masturbate while remembering the earlier activity. I love the feeling of doing it with a sticky cock.
The funny thing is that after I shoot my load into one of the girls, I will get hornier than ever a little while later. Now days, by this time I am exhausted, so I will masturbate watching one of my favorite movies. I never have any trouble cumming doing this. I enjoy timing my orgasm to the guy on the video, or the animal's orgasm.
I also regard sex as a precious thing! My proudest moment was when I was boning a horny donkey girl in the perfect position with my back against the wall and my legs out enough that I was lifting her butt up on each thrust. Them my stupid trick knee popped our of joint with a severe pain. I gritted my teeth until the pain subsided, but stayed in position until I could pick back up. I still remember that amazing orgasm. I am even edging a bit now as I write this.