Out of all of my surgeries, the draining seton was by far the easiest. There's pain for a few days after, but eventually it ends up fine. I've now had my fistula for over 5 years. For me, it ended up turning into kind of a piercing - the skin all the way around it healed completely, but the "tunnel" was still there, if that makes sense. I don't even need a seton anymore. But when I had it in, after a few months I barely even noticed it was there.
"For this thing I besought the Lord thrice that it depart from me. He said, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities; I take pleasure in infirmities, reproaches, necessities, persecutions, distresses, for when I am weak, then am I strong" 2 Cor