All interactions increase the richness of your social graph, IMHO anyways. It's the difference between ordering your lunch from a human vs. tapping it out on a touchscreen and having it appear from a pneumatic chute.

One of the themes I'm getting from other comments here is that modern society makes you too independent - everything we need we get from machines, and in the places where we must interact with other humans there's a corporatized formality to it that robs it of human substance.

For example: Your local grocery store is probably a gigantor-chain, the person at the counter is probably running through a script of unenthusiastic niceties - a far cry from smalltalk with the grocer you see every day at the corner store.