I like leaving my phone at home for taking walks or put it in a drawer while working. But since it's the main device for communicating with my peers plus a lot of services require you to have a phone, it becomes increasingly essential (which I don't like, but there we are).
Amateur-hour. If you were really serious, you wouldn't even know how to read.
Not viable considering the number of services (e.g. 2FA, certain apps) only usable on a phone.
Put it in a desk drawer and leave it there
It doesn't have to be so radical. Just have a lean (social network apps free) smart phone with only essential notifications on (e.g. family and friends via messaging apps).