Many apps (Office included) support a ctrl+alt+V operation that does a "paste special" and allows you to paste it as unformatted text.
An obscure keyboard shortcut (vs 4-5 common ones), finding your option, and switching to the mouse doesn't seem like a better solution. Plus it's not universal.
Ctrl+V, Ctrl, T
To paste then remove formatting.
Personally I still use notepad or the address bar.