If you have bad eyesight, try this experiment. Go to your local mall food court or other public place. Check out the members of the opposite sex (or whatever group of people gets your motor running) and get an idea of the attractiveness of the people you see.
A week later, return to the food court, but this time without your glasses/contact lenses/monocle. Compare. You will no longer be able to see all those pesky imperfections like wrinkles, small moles or female facial hair. Everyone (even members of the same sex) will be more pleasant to look at.
And unlike with beer-goggles, you can simply put your glasses back on and drive home safely.