I've started Wayland up just for fun, to see what it was about, but I've never actually used it. Xfce will probably never port to it (since it'd involve a ground-up rewrite of most components), and I have no desire to switch to a different desktop environment. So as long as X11/Xorg exists and people still continue writing and supporting software for it, I don't think I'd ever switch to Wayland.

But that will be the problem, someday: if Wayland ever becomes the primary windowing system to target on Linux, I would expect some things might disappear. Like maybe Steam for X11 stops being a thing. Maybe Mozilla stops releasing an X11 version of Firefox. That would suck. But I do expect I still have at least another decade before that becomes a concern.