Well that's sort of the deal with medicine, everything has a trade off. Incorporate drugs to modify aspects of your bodies function when the net effect will extend your life. Their ain't no such thing as a free lunch. I take hypertension medication, knowing full well that it's damaging my circulation. I must work to mitigate that damage, but irregardless, I would die much sooner from my blood pressure damaging my arteries and organs the opposite way, then I will from the BP meds.
Same goes for everything, statins are no excepton. They don't come with out a cost, but for some, that cost is less then not using.
I wish people thought more about what medications are, and didn't just think they were cost free.