Depends on the window manager you are using.
If you are coming from i3 the move to sway is a no-brainer and works great (sway is wayland only). Firefox, thunderbird, Libreoffice all work great and look great, i.e. sharp when you need scaling for example. Sway is to thank for base work they did for other distros like a wayland clipboard protocol all the others are using.
Second comes Gnome. No issues. Gnome laid the gruntwork of porting gtk3 to wayland which works great.
Third maybe KDE. Still two years to come. KDE plasma is suffering from arguably better design decisions like client side decorations vs. Gnome serverside decorations but as many users use GTK based apps those GTK apps do not yet play nicely with the KDE design decisions. As such the brave KDE folks have to implement things themselves while those relying on GTK are done. QT is fine with wayland but not everything is QT.
That's all only true if you are not using NVidia hardware.
> If you are coming from i3 the move to sway is a no-brainer
I was thinking of waiting another year to jump as I'm having no issues with i3, what are the advantages?
Sway has nicer configuration for multihead display setups than you ever get with xrandr, which is very nice on laptops if you often connect to different external monitors. There's also some clunky support for moving windows around with the mouse, which I've found to be occasionally useful.
Then there are the wayland advantages: very little screen tearing if any, no blanking the screen when connecting to a new display, better security properties.
There's disadvantages as well. There's no xdotool support, and if you want to use any sophisticated keybindings or remapping keys, you'll be forced to rely on Sway's configuration language to do that for you. On i3 I was able to bind ctrl_r to right click, but that is — as far as I know — not possible on sway without rewriting the libinput event stream, which is very painful.
There's no xdotool support
https://github.com/ReimuNotMoe/ydotool
Also, do you know about the "i3 Migration guide"?