Yeah, I think they're gross. In high school two friends of mine hooked up (guy & girl) at a party. She was really drunk and when she came to school on Monday she had hickeys all over her body, arms, neck, legs. It was really gross. I felt bad for her.
He wasn't respecting her very much that day. Come to think of it he also punched a hole in the party host's living room wall as well. He wasn't respecting much of anything.