Proper Grammer would be "Why do."
Also, leaving the all caps Impact font just looks lazy.
I see professional looking memes in politics I disagree with every day but admire the way they look with good fonts.
Conversely I see memes I agree with daily that disappoint me because of bad layout (usually too big an empty space between pics and the lazy looking all caps Impact font.
Conservative or Liberal we all need to try to make our memes look good.