I personally have always preferred email and messenger, although I am slowly softening on the phone aspect.
The thing about the phone is that it takes all your attention, you can’t multitask online while talking on the phone. So if the call comes at the wrong time it interrupts everything and is annoying. Also, once your number gets out there you get calls from all kinds of people, some of them pretty pushy, and I sure don’t like being pushed.
It’s really likely a matter of personal preference, and when you do have something like a campaign to discuss, the phone is a lot faster than other ways to communicate.
Once I have moved into the new house (and I am just about to) I will have a phone line just for this. I will likely give the number out to just a few people and see how it goes.