5. Landline phones
Landline phones are losing popularity among Generation Y, who are becoming increasingly content with only having wireless phones. According to a report from the National Center for Health Statistics, 51.3% of Americans aged 25 to 29 lived in households with only wireless phones in the first six months of 2010. This is the first time the number of adults in wireless-only households has been greater than the number of adults in landline households for any age group. When looking at all ages combined, less than one-quarter of adults lived in households with only wireless phones.

6. Cigarettes
Smoking rates among young people have historically exceeded those of the general population. Now that group is dropping the habit quicker than anyone. According to the Centers for Disease Control and Prevention, the share of people 18 to 24 years of age who were current cigarette smokers decreased by 17.6% from 2005 to 2010 — the largest decrease among any age group. The share among 45- to 64-year-olds dropped only 3.6%. The amount of Americans 65 and older who smoke actually increased 10.5%.

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7. Desktop computers
Millennials are the only generational group to be more likely to own a laptop computer than a desktop. According to data from Pew Research Center, 70% own a laptop, while 57% own a desktop. By contrast, 64% of those aged 57-65 own a desktop, while only 43% own a laptop. Ranjit Atwal, research director at Gartner, states in LAPTOP Magazine that those in Generation Y simply “are not buying PCs as their first, or necessarily main, device.”

8. Television
Adults aged 18 to 24 watch less traditional television than any other age group in the country, according to Nielsen’s most recent Cross Platform Report. That group, on average, watches just under 24 hours per week. The national average is approximately 32.5 hours. One of the leading reasons for this difference is Generation Y’s relationship with the Internet. According to a report published in April 2010 by electronics review/research company Retrevo, 23% of those under 25 watch “most” of their television online, compared to 8% for everyone.

–Charles B. Stockdale and Michael B. Sauter