Really, think about it.
Finger is an ancient web protocol first defined and implemented in the RFC 742 in 1977. Its functionality has not changed much since then aside from a few shiny features, but this is besides the point. Finger is now mostly a hobbyist thing, though it isn't deprecated, and there are a few large hosts that have implemented it (plan.cat is one). I love finger because it's simple and stupid, it operates in plaintext without any fluff, and has a very simple spec.
The most attractive (and probably the only) feature of the finger protocol is the 'plan', which is a plaintext file stored in the home directory of the user and can contain text of any kind. It can be looked at as a sort of status, similar to how social media platforms have user statuses. In my opinion, finger is single-handedly better than most modern-day social media platforms because it's decentralized and simple. You have a piece of text that you can put on your profile, and that's about enough. Plaintext is a wonderful format, and finger is a wonderful protocol.