You will be shocked and awed by the amount of people who kill people just to kill people, because they want to kill people. This ranges from people who simply do not like other people ooc, to killing people who are just edgy, to killing people because they just belong to a settlement. The later being the more acceptable. I remember a lot of people who killed each other because of ooc vendettas, usually because they got a friend banned or the banned player is running an an alt and harassing the people that got them banned.
This applies to anything VA in general. I stole about a dozen anvils from Dwarves, Salvus, and the Graymanes. My character wasn't a thief, he wasn't poor, and he wasn't starving. I just knew I could smelt it into iron bars and a GM would give me the iron equivalent. I wanted to do it ooc, so I did it.
I am not saying this is necessarily good or bad, but the assertion that people do things to further their characters is, more often than not, false. People do what makes them happy ooc, not what furthers their goals. Those that do further their ic goals, kudos to them, are likely doing it because they enjoy progression. Some people just don't give two damns about that. And in short before I get a response, I am not speaking ill of how anyone carries on their roleplay. Do what makes you happy. I am just saying that it happens, and the notion that it doesn't is narrow. OOC and IC tend to creep into one or another subconsciously, despite best intentions to avoid it.