I think it's easier to press than anything more conventional (and also super-easy to remember). This fast and smart jumping around function is one of the biggest things I miss when I use Emacs — and the shortcut is an important part of the experience.
> I just press it occasionally.
Wouldn't that be a big problem only if it was something more destructive than a search popup?
P.S. But I may have a weird perspective on shortcuts: the one I have sweared about pressing accidentally more than once is Ctrl-Alt-Backspace. For the unfamiliar: it's an emergency way to kill the X server (=> the entire graphical user session), nowadays usually disabled by default.
Who the hell decided that it's a good combination for a shortcut? I just press it occasionally.