There's always challenges in pros and cons!
For instance, having as a con that a Rolloff doesn't use someone else's proprietary changer system; it can be a preference, but it's a real hard felt choice, right there.
Not all Rohloffs are disc compatible..true enough, but the same can be said for other designs of hub, IGM or not
Rohloff hub needs a disc that fits it.. again, true enough, but as they are available from a number of manufacturers, is it an issue?
Geometry changes..it does, but not as much as when I move around on the saddle.
Needs a chain guide in some circumstances..it may well, but theres a parallel discussion on chain lines and 1X11 grossest and, to be honest, the single chainring single sprocket arrangement seems to need less help than most.
Under load changing - it does need a technique to make it work ( to be honest, a technique involving removing the load briefly, which I now do on derailleur bikes as well) but given the number of missed, draggy, half cut changes on the derailleur bikes over the years, I would bet I've got a better % success rate on the rohloff.
And of course there's stuff which is absolutely right - rearward weight bias, component cost, specialist repair requirement, all of which may or may not be an issue.
We all have things which are more or less important to us, and its bound to change from individual to individual. However, most of the stuff here isn't material to me, or is minimal risk (like specialist repair cost) so I'm still in the happy camp! Your mileage may vary.