It makes sense to have everything going there and with their multiple email thing and some other features a person is quite protected as far as emails go, not giving everyone the primary email address.

It might be a good idea to switch over your email address for whomever has it. I don't use my email addresses to communicate with friends and family much so I haven't switched them over yet but will shortly, when I have the time. Other than them, there's only a couple that I haven't switched: Dentist, chiropractor and so on. Everything else runs through Proton now and it's glorious...no spam.

As for the privacy thing...yep, that's the thing with Proton Mail, Switzerland has strict privacy laws so having the company operating from there means they have to abide by the law of the country. It's a good thing.