Have you noticed how when couples "dance" it's not really dancing? I mean, with a slow song, it's more like just swaying back and forth isn't it? It's probably more of an excuse to just breathe down each other's necks. Or even at dance clubs, I wouldn't say that people there dance. They just kinda stay in one place and shake their hips a bit. And it's so crowded that that's all people really are able to do. I would say that ballet dancers or swing dancers actually dance.
Yeah, so most people don't dance. But I guess saying "May I have this dance" is better than "Will you sway with me and let me breathe down your neck?"