gtsnissanb i understand what youre saying and im happy to accept your and others opinion...but i see it as, you wouldnt decide to go sky diving and put off packing your shute properly. (extreme example i agree haha)
With the power mine is producing, i dunno if i'd be confident trusting the stock brakes (well actually i musnt have been or i wouldnt have upgraded them
)...ive had to brake a few times to avoid accidents both before and after the upgrade and whereas the stock ones locked up virtually straight away and sent me accross the road into the on coming lane (thanks to a van driver deciding as i came around a left hand blind corner to pull a U turn)...a less serious incident with the bigger brakes brought the car to a stop without a single lockup or squeak. Both of those were at 30mph btw.
I will say i was also intending on putting it on the track at some point...so i do have another reason for the brakes 
But each to there own.