Try having them chew through the soffit on your house and move into your attic, and see how cute they seem then. Kind of gives you a new perspective.
Oh, and the playful romping that you see them doing...and you say "Oh, look! How cute! They're playing with each other! They're so cute and playful, you can almost see the smiles on their little squirrel faces." Turns out it isn't playful at all, it's rape...yep, squirrel rape.
They're dirty little soffit-chewing, attic-defiling, rapists; rats with fluffy tails. That's how you can hate squirrels.