It's a violation of the Adsense policy to disclose that information. https://www.google.com/adsense/localized-terms?hl=en_GB Especially section 9:
I guess it seems fun. When you can show something that other people can't achieve the same thing like you. Or when you can meet and make an elite group with people which have the same luck with you.
I think most people do it because they don't know, if they new it's a risk of loosing the account they probably wouldn't do it.
Ignorance is no defence, It is their own responsibility to read the terms when they sign up. OP's an idiot anyway and won't have his account very long especially when he clicks his own ads and brags about it on a public forum.
So what's the point!? ... seems everything is normal but low page CTR makes you think about your ads placement.