From the Huffington Post:

A "Better" Body. A SHAPE and FitSugar survey from May found that 68 percent of women would give up sex for at least a month in exchange for a "perfect bikini body."
Their iPhone. A survey released on June 18th, the iPhone's fifth birthday, showed just how addictive these gadgets are. Fifteen percent of participants said that they would rather give up sex than spend a weekend iPhone-free.
A Good Night's Sleep. Sometimes you just need to seriously snooze. A May survey from The Better Sleep Council found that 12 percent of Americans polled would give up sex for better sleep.
Facebook. Apparently women really are that into social media. A survey Cosmopolitan conducted in October 2011 found that 20 percent of women would rather give up sex for a week than give up looking at their friends' recently posted photos.
Internet Access. Twenty-one percent of people would give up sex rather than give up Internet access for a year, according to a March report from Boston Consulting Group.
Studying Textbook-Free. In an August 2011 survey, 25 percent of college students said they'd give up sex for a year in order to stop lugging heavy books around. Fortunately more text books than ever are digitized.
Their Favorite Food. Eating trumps sex. A February 2012 survey by Bon Appetit found that 75 percent of people would give up sex for their favorite food.