If we are acting like this, then I use onenote for written math which google docs is fairly incapable of, also msft seems to take my privacy a bit more seriously, c.f. Timeline of fixes for logjam attack in popular browsers...
What equations are Google Docs "Insert Equation" feature incapable of? As for Microsoft taking your privacy more seriously are you implying that Google doesn't because I seem to recall Microsoft being the first company to sign up for a NSA membership in 2007.
Correct, Bill Gates also recently stated that companies such as Apple should decrypt people's devices if the government asks for it as long as it's 'really' important to the government, a statement said publicly such as that from such a huge 'enterprise' - you know it's deeply entrenched.
The ones you write by hand? i.e. "written" equations