I passed my UK test only five months ago at the tender age of 47. The testing procedure in the UK is about to get more stringent next year (2008) and I am personally all for it.
My partner's son who is 19 is "Busa" this and "gixxer" that but has neither the skill, sense or personal responsibility to ride either but were he in the financial position to do so (he isn't thank God!)he could purchase one of these missiles and not only kill himself but put the lives of innocent people at risk.
A higher minimum age limit should be imposed.