Bees pollinate around one third of our food supply. If bees disappeared, then one third of your food would disappear with them.
You would lose that yummy honey that is either eaten raw or in so many scrumptious sweets.
The economy would also be greatly impacted. Honey is a multi-million dollar industry in the U.S., while fruits and vegetables are multi-billion dollar industries.
This video gives a good summary about this issue, and how it potentially affects you.