"I just can't see the point of this or Chromebooks in general."
Then Chromebooks are not aimed at you. Chromebooks are for people like my wife, my daughter and (most of the time) me who want to pick up a computer and do basic browsing, office work and email - which is what 99.9% of users do every time they pick up a laptop. They don't want to have to wait for Windows to install yet another set of updates; they don't even know what Linux is, and they don't care either.
We have three in our house - one each. Mine also has Crouton installed, so I can play with Linux.