I know you've probably all seen it before but have a look again. Vince Vaughn explains perfectly why we all feel uncomfortable with dates (or at least I do...).
Woody Allen also puts it well in Annie Hall when he asks Diane Keaton to kiss him before they go to dinner to avoid having to think about the kiss goodnight the entire time and have all that "tension" (this was before the word awkward was invented). Now we can digest our food. Refreshing.