I can't spell for shit anymore. Ever since auto correct became omnipresent in pretty much all writing fields, my brain just kinda ditched remembering how to spell words.
buuuttt
Manual labor has been obsolete for at least 100 years now for certain classes of people, and fitness is still an enormous recreational activity people partake in. So even in an AI heavy society, I still strongly suspect there will be "brain games" that people still enjoy and regularly play.