Your quality of life after a resecition depends on how much they cut out and how good a surgeon you have.
My cousin had a resection two years ago and they took 7 inches of small intestine and the valve and she has been in remission ever since with no problems, and with BMs 100% normal. She wishes she had the surgery much earlier rather then listening to the GI who insisted he could solve the problem with humira.
She had a really good surgeon who didn't take more intestine then he had to minimize problems after surgery with BMs. The surgeon had a pathologist in the OR with him who was analzing samples of intestine as he was cutting so he knew he was not leaving any CD behind to flare up afterwards and also so he was not cutting out more than necessary.
To this day two years pots opt, my cousin is symptom free. The only maitenance she is doing is taking pentassa and following the SCD diet.