Most likely because like most hall lights it get turned on and off more. Kind of like a car that has been a daily driver to work and back and other short trips won't last as long as one that been used for long trips.

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it's only kinky the first time

it's not the orgasm but getting there thats fun

a shot in the bush is worth two in the hand

whip me, beat me, tie me up, break my arm, but please don't break my heart

"The trouble with the world is that the stupid people are cocksure and the intelligent are full of doubt" -Bertrand Russell