Yeah, I do, but I like to share them, too. I do know that there are others who enjoy seeing my memes, also, but when they're arbitrarily downvoted until un-Featured, they get missed by those folks.
Honestly, it doesn't hurt my feelings when my political comments get downvoted, because they're still visible by clicking "Low rated comment". But downvoting memes/gifs to un-Featured status because they merely disagree with them is suppressing freedom of speech.