Interesting topic!
When given the chance, I always use covers. It's more of a mental thing, a sense of comfort. Toilet seat covers are like airport security. They don't really prevent anything but we continue to use them because they give us a false sense of security.
"Any American who is prepared to run for president should automatically, by definition, be disqualified from ever doing so"-Gore Vidal
"Conformity is the jailer of freedom and enemy of growth"-John Fitzgerald Kennedy
"The reason the mainstream is thought of as a stream is because of its shallowness"-George Carlin
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