As achoo probably didn't think to check this:
http://www.cyclehelmets.org/1052.html#A
Significantly, only studies by one team of researchers have concluded that all types of cycle helmet offer protection to all cyclists under virtually all circumstances, with and without motor vehicle involvement [9] [10]. It is this research that is most frequently cited in favour of cycle helmet effectiveness and helmet laws.
This team's results have been found to be riddled with errors and "bodging" to get the numbers they want.
No one else has found a benefit to wearing a helmet in collisions with cars. Which is where virtually all cyclist deaths occur.
So, once again, a helmet may be useful in reducing minor injury - but as a tool for reducing the possibility of death it is ineffective. Which is the point that you have failed to grasp.
In fact, your stupidity is putting lives at risk - because if people believe that a helmet largely precludes the possibility of death then they will fail to take other safety measures and engage in riskier behaviour.