Good to hear Protonmail, next to their own encryption, now also supports PGP.
You don’t need encryption you say? Apart from that itself being debatable (after all you do expect encryption for a wide range of your online transactions), think of it as herd immunity. If only those who need encryption to be safe (investigative journalists for instance, or dissidents) use it, that in itself makes them a visible target. The more normal it is to use encryption, the more it helps those whose lives depend on it. Don’t think that is a remote issue. In the EU for instance, journalists do get murdered when investigating corruption and fraud.