User blog:James12708/Why would someone waste their time with excessive vandalism

I came across the lists of banned IP addressess and on one part ( remember the explicit image spam ) there's literally at least 15 different banned IP addressess. What would drive someone to vandalize a website like that, I've seen people do one or two sentence changes on Wikipedia but why all out assault a website? I mean all you did was get a bunch of IP addressess from proxy servers permanently banned from editing and for what? A vandalised page that will stay on for a few minutes before being removed. Just my idea on vandalism, I can deal with trolls but vandals are just rediculous.