now, now, Sinala.... behave...
I figure if it's been said you can take (reasonable) amounts for personal use, then fine. If not, then don't take it unless you're going to pay for it... no permission technically means stealing - whether 'everyone else does it' or not...!
My 2c...
and the old line "but they don't pay me enough...." equates with the shoplifter's "the prices are so high they deserve it..."