I think that requiring all your desktop apps to be rewritten is go is going to be a big ask - equivalent toolkits like KDE/QT have gone out of their way to provide multiple language bindings, or to just support X-apps natively

I’ve used Nuklear to make simple, portable, UIs: https://github.com/Immediate-Mode-UI/Nuklear

Everything has trade offs; I might need to come up with my own way of handling some bit of state, but my projects aren’t big enough to need the software equivalent of a Costco.