Before leaving a 500 words essay on how horrible a Wikipedian I am, you may wish read the following.
- Any deliberate attempt to compromise the quality of content on Wikipedia is vandalism. I don't care what your views are on the subject of the article - you may hate pears, that's okay - but vandalism is vandalism and must be reverted. You are welcomed to improve an article if it is biased, but this does not give you a reason for write profanity on the page, or remove everything on the page. If you think that a film produced by an American producer is a British film, let me make it clear that it really isn't now.
- Biographies of living persons are special. Anything unsourced will be removed. A YouTube video someone uploaded, or a a post someone posted in a public forum, is not a reliable source (unless it's posted from CNN's official channel, that is).
- Removal of any useful content from an article must be explained in the edit summary. A claim that "I am handsome" is not a proper justification for removal of details on how mitosis works.
Please don't take the revert personal! I am not here to judge you as an editor. I am a human so sometimes I do make errors. If it's the case, do discuss the issue with me at my talk page!