WebForms can die in a fire, and thankfully has, for the most part, but WinForms is still plenty good enough for cranking out quick and dirty tools. Maybe I'm old, or it's just because I started out in high school doing VB6 forms applications, but I still prefer it unless I have a good reason, over WPF.

WinForms is also a pretty thin layer over Win32 controls, as well, so if you have to switch between .Net and native C/C++ Windows dev, it's less of a context switch.