Freewriting is useful in other ways too. Some people use it to get inside the head of their characters. Others use it to clear out their minds prior to writing—an active meditation of the hands, if you will.
Personally, I find freewriting to be most helpful in fighting fear. I don't find it to helpful in finding inspiration, but that's just me.
I went through a period where I freewrote every day. I don't recommend that. Otherwise, it will become a crutch. Use it only as needed.