My biggest problem with M+ lately has been finding a group that actually stays together. I can sit in Group Finder for ages, finally get invited, and then one person leaves after a single mistake. After doing that too many times, I figured that instead of constantly searching for people, an m+ carry / keystone boost could make more sense when I just want to get a particular key done. I used it for a few runs where my main goal was simply to make progress without dealing with another random PUG. If you’re mostly tired of the group-finding part rather than the dungeon itself, that’s probably the situation where I’d consider it.