Earlier quoted context omitted.
For my personal email I use the new iCloud+ service, as I already had a plan and they have the "Hide my email" feature which is a plus. For company email: Fastmail. They're professional, I trust them, the price value ratio is good. Can't complain
I'd love to switch to the one on iCloud+, which I already pay for anyway, but Apple's restrictions on what constitutes a "family" are bizarre - as soon as I add anyone to the family, I'm also paying for any apps they buy. This is fine with my kids, but what right do I have to know what apps my wife is installing on her own phone? Feels like such a creepy restriction.
I haven't tried out the family sharing yet though.