If I eat the most delicious, gloriously decadent, rich and luxurious, toe curling and moaning level of enjoyment of food and it gives me food poisoning, I’m probably not going to rate that meal as the best I ever had.
I'd agree with this comment wholeheartedly.
In my case, my FWS betrayed me with a guy who would fuck her anywhere, our house in our bed with all 4 of our kids down the short hallway watching TV, his house in their bed, in our garage, in the shop where he worked after hours, in a park in the middle of the day with families around outside of the vehicle, in someone else's house where he was doing some work when they weren't home, in the woods at a wildlife preserve, and in the woods on someone else's property, she had sex on the ground in front of our youngest child in a car seat (very young child who has no memory of this thankfully).
Wild sex. Crazy sex. Risky sex. Unprotected sex. Drunk sex. Morning after pill necessary sex...yes the condoms in the drawer were for me, not for the AP who didn't need them apparently despite not having had a vasectomy.
How can anyone compete with that?
You don't.
My FWS would hardly fuck me in our bedroom, and it had to be dark and the blinds had to be drawn, the kids had to be sleeping, it was like she was afraid our parents would catch us. We could go months between sexual activity. She had so many hangups about sex that I was baffled, after all she had way more sexual experience than I did coming into our marriage and talked about how much she loved sex when we were dating. Yet, during dating and marriage, I discovered that I had way more sex drive, while she had way more partners, and it was all "nonsense sex", by which I mean it was rather unfulfilling. She had never had an orgasm, never, not once, with any partner, or on her own, including me, till long after we were married, and I'm the one who helped her work through it. I wouldn't have been able to do that if I had not had professional knowledge along those lines.
As it happens, in my marriage, I was nearly to the point of asking for a divorce because after 18 years of trying, working with my FWS, and slowly getting older, and feeling unwanted sexually (by my spouse but then being periodically hit on by other attractive women, despite them knowing I was married, which just left me being really fucking irritated because I didn't understand why my spouse wasn't sexually interested in me despite telling me that there was "nothing wrong"), after all I was the one who basically painstakingly helped her "get there" orgasm wise, this led to the confession and D-day.
Which eventually led to a real sex life in our marriage, something I had been trying to achieve for two decades.
Good sex, great sex, fulfilling sex, comes from two partners working together to give/help each other have a pleasurable experience.
If the two people involved work at that, together, over time they become "best partners". If both partners are not invested in doing so, then it will not happen. It took my FWS a long time to understand that, and she is attractive, educated, intelligent, and from a very liberal background. However, no insult intended, she had the sexual maturity of teenager at 40 years of age for a variety of reasons.
Affair sex is something else, and not just in my FWS's affair.
If a FWS says that they prefer the affair sex, and thinks it was the best sex they have ever had, I'd suggest they get IC and figure out why they can't achieve better in their marriage, with a partner that they have way more time to figure things out with.
I agree with GMC94, statement copied below, I had the same experience. I didn't intentionally "sacrifice", but I thought over time we would be able to work it out (turns out we did but it took going through Hell to do so).
What I can say is that at the moment I married him I was willing to sacrifice that mind bending sex for all of the other (what I thought at the time) wonderful things about my WH. Like honesty & good character (about which I was horrifyingly wrong). Being intellectually compatible. A good dad and provider, etc. Those are things I still value more than mind blowing sex.