Self Employment TAX?? WTF

ok, a rant,

hey what's the deal with the "self-employment tax"?? can we please ditch this? 

I'm not talkin about INCOME earned through self employment (freelance), but the 15% off the top.....then to tax the actual income....why aren't those taxhaters freakin out about this?

Anyone know if other countries have such a ridiculous thing? Who came up with this and can we throw stuff at them in public? I'm no teabagger and have no problem payin lots in tax & getting lots of groovy things in return, but if you say it out loud it sounds sick and twisted.....let's say it out loud...SELF - EMPLOYMENT.....TAX.   see?  WTF?