BELLEVUE, Wash., May 7, 2013 /PRNewswire/ -- Expedia.com®, the world's largest online travel agency, today released the results of an online survey conducted on their behalf by Harris Interactive, which was designed to examine the link between vacations and happiness. The Expedia® Pleasure Index found that consumers link their personal happiness to vacations. 86% of Americans pair the two, and those who vacation three or more times per year are more likely to do so than those who travel two or fewer times. (Photo: http://photos.prnewswire.com/prnh/20130507/AQ08617-INFO) (Logo: http://photos.prnewswire.com/prnh/20110121/SF33870LOGO-b) While unsurprising that vacations bring happiness, what is surprising are the institutions that vacations surpass. Americans report that vacations make them happier than their marriages, their religions, weddings, birthdays and even their cats. (The news is not all bad for cats: the study revealed that consumers who have never taken a vacation are more likely to say that cats make them happy than those who have gone on vacation within the past year.) Expedia has formally launched its 2013 Summer Sale (details follow) to help consumers find the happiness they crave. "I love my husband, and I love my cat, but like most Americans, I love them both more when I'm on the beach, with my husband of course, not the cat," said Sarah Gavin, Expedia Travel Expert, Expedia.com. "Investing in a vacation is one of the best ways to bring more pleasure into your life. The good news is that Expedia has more programs than ever to save money on packages and last minute deals through mobile and Expedia ASAP®, so you get all the pleasure with none of the guilt. You can even give the gift of pleasure with our Groupon Getaways with Expedia program or get a voucher for yourself – stocking up on pleasure at a great discount is an investment in your marriage, your job and your whole life." The Expedia Pleasure Index was conducted online within the United States between March 19-21, 2013, among 2,076 adults ages 18 and older by Harris Interactive on behalf of Expedia. Full details on the 2013 Expedia Pleasure Index can be found on Expedia's Media Room. When consumers go on vacation, they report an increase in their libido. Among vacationers who take any vacations in a typical year with their spouse or partner, "pleasure" is taken literally: 88% report being at least somewhat likely to be intimate. On the whole, nearly 40% of Americans who take any vacations in a typical year and have a spouse/partner report being "somewhat to much more likely" to be intimate while on vacation. Only 12% report being "somewhat or much less likely."