I'm still not sure. I am not sure it solves any pressing need. Sure Google apps have problems but I can get by with them. It's kind of an 'activation energy' thing where if Google were to cancel keep/calendar I would hunt for another solution. But it might be a .txt file on Dropbox because then again I don't need another service.
It is a bit like JavaScript fatigue. I have SaaS fatigue! Especially as a developer using Azure, Dropbox, Travis, GitHub, Keepass, Google, etc. then at home using Netflix etc.