This is an extremely delicate, difficult, and nuanced topic that's for sure. I feel like it could have been better worded as you saying you believe R is a myth, but I digress.
I'm going to respond based on a combination of my own feelings on the matter and stories I've read about life after infidelity.
I believe R is a way to survive, hence this site's name. Many couples R for reasons outside of love: Age, children, assets, fear, codependency, etc. Some also do it out of love, but I don't believe love is enough to save or repair a marriage/relationship damaged by infidelity.
I, too, have read many stories on here of a BS in R who wishes they had made a different choice 2, 5, 10, 15 YEARS down the line even with a completely remorseful WS who never cheats again. Who internally struggle so much when they shouldn't have to. It's true they may get to a point of contentedness, or maybe acceptance, tinged with melancholy. Where they may not deal with triggers every day, or even every week. But to what end? The scales are forever tipped. There is now a power dynamic within the relationship that will always be there, one where the BS can, rightfully so, walk out at any moment because they decided they really can't take it anymore. Where the BS is the morally "superior" partner, whether they think that of themselves or not. Where any and every compliment paid to their relationship or their WS will sting, not make them feel warm. What I'm saying is, the BS and the WS are no longer on equal ground, which I believe is imperative in a healthy relationship. No one should be above the other.
The BS will deal with triggers no one should have to deal with in a healthy relationship. Is it fair to be in a relationship where you will always remember a time where the person you loved and trusted the most hurt you so irreparably? This isn't a case of a partner maybe calling you a jerk, or spitefully not saying I love you during a fight, odds are you wouldn't remember those times. This is permanent.
That's not to say couples should be judged for going through R. Everyone is different. Everyone does what they think is best for them. But I know, for me, R just isn't viable. I tried it once. I was young, naive, and thought love and a remorseful WS should be able to fix everything. It doesn't. The pain of separating will be fierce and fast, but it will fade and eventually turn into detachment. R, in my own opinion, is like a slow death by a thousand cuts. Each time you're triggered, each time you are listening to a heartfelt love song, each time you fight, or hold each other, or go out on a romantic date, you will feel something missing, something just slightly off. Those are the small cuts. Some people can manage them better than others. I could not. I fiercely believe an A never strengthens a relationship, despite how an R'd couple may feel on the other side. I respect their perspective on their own relationship, certainly, but it's like saying cracking a house's foundation made it stronger because it was doubly reinforced afterwards to ensure the house doesn't collapse. That didn't make it stronger, that crack is always there, regardless of the measures taken to guard against it.
I need to feel completely in a relationship to be happy. I need to be able to throw my entire self, heart and soul, into it and feel those things be cradled and loved. I can't do that if I feel like I will always have one foot out the door.
[This message edited by WonderingGhost at 6:06 PM, Tuesday, February 28th]