I'm writing because I think my answer is different from Ow's. Maybe not, though.
For those of you who have decided that you are 'reconciled' with your WS, how did you know you had reached the point where you could define yourself as such?
I saw R as a process of resolving issues. Then I came to see M the same way, except that in R, we had to resolve issues around W's A, and in M, we had to resolve day-to-day issues. Over the years, I found A issues taking less and less of my energy and d2d issues taking more. My view is that R morphs into M, and the process doesn't change.
A corollary is that R is not a project - no end date, and maybe not even a start date. I committed myself to R 90 days after d-day, but did R start then? Did it start on d-day when we both said we wanted to R? I just don't know. Life is analog, not digital.
Sometime 3.5-4 years after d-day, I realized I no longer harbored any desire to see my W punished, and I felt no desire for revenge. Also, my sense was that our M was strong and that we had resolved so many issues that I no longer feared that an issue would arise that we wouldn't resolve.
So I declared victory. I could have declared victory 2-3 years earlier, but I wanted to avoid doing it too early. If my bike riding goal is a 1,000 miles for the year, I don't celebrate until my odometer shows 1000 miles; 999.99 miles doesn't satisfy me. (OTOH, if GPS errs by overestimating my miles, I'll take it. )
Although you are 'reconciled', does this still mean that you suffer triggers, etc., or is part of being reconciled accepting that such things will always be there, but the rest of the relationship feels solid? (and how do you know when things feel solid?...)
We're together. 'Reconciled' implies - to me - that I had to swallow something I didn't want to swallow. 'Together' means: we're in this (life) together. We love each other. We have a long history. (We met 59 years ago tomorrow. We got married 57 years ago this coming week.) The A is part of our story; so are innumerable other good, so-so, and bad times.
I never saw R as the lesser of 2 evils. I saw both R & D as wins for me. I don't see the 'shit sandwich' as a valid metaphor. My WS cheated; that's her, not me. I always knew she was imperfect. I just can't see imperfections as 'shit'. (I'm sharing my thinking about myself; I'm not saying other people should adopt my way of thinking.)
I still trigger on infidelity sometimes. If a drama has a character I think is like my W who cheats, I trigger. The triggers, however, are annoyances, not crises. They throw me off for seconds, maybe minutes, not hours or days. Hell, some triggers took weeks to process 8-10 years ago. Alas, I know something may be lurking out there that will trigger me for a long time, but ... I haven't met it and probably won't. I don't fear triggers. I think of them as 'pain coming to the surface so it can be released.'
*****
R is difficult, not least because it requires the BS to face themselves and decide who they are. But facing oneself is empowering, IMO.
If you think R requires swallowing shit, R is probably not for you. That's no reflection on you - that's how you're made or how you made yourself. Just know that people experience the same type of event in multiple ways.
There is no one size fits all.
IOW, BSes who give up trying to control their outcomes do best after being betrayed. By all means figure out what you want and work to get as much of that as you can. But you can't control your WS, and you can't predict the future. The best you can do is make mindful choices, prepare for the worst, and hope and act to get the best.