redefined :
you cant reduce a processors life by running it at default 3.2ghz speed.
i dont know why you are unable to understand basic physics. but lets try explaining it to you.
a processor running constantly at 3.2ghz is subjected to more heat than a processor that down clocks when idle. this is because a higher clocked processor has more rapidly moving electrons, which thanks to friction, means more heat.
more heat, means faster degradation of the switches that are used to make the processors calculations. and this in turn means a shorter lifespan.
it doesn't matter what the default clockspeed is.
a Ferrari is designed to travel at 120mph, but if you keep it at 120mph everywhere you go, its gonna die quicker than the one that sticks to the speed limit more often.
does the analogy suit?
though i do agree with JDfan, its unlikely a processor will die before its obsolete (and as an extreme overclocker, im sure as hell not one to care about reduced lifespan) but for virtually no benefit at all, i dont think you should recommend a person do something that will reduce the lifespan of the processor. they will gain nothing, but be subjecting their chip to more heat.