Good point. To reiterate: the XP system is meant to encourage users to build a high-value web site. Users gain XP by doing things that add value to the site: writing good answers; writing questions that provoke thought and elicit useful answers; and — not to be forgotten — moderating site content by making value judgements on postings (i.e. voting). (Currently, monks do not get XP for exercising the moderation/consideration system, nor for exercising their special powers, if any.)

Recommended reading: Voting/Experience System.