According to a survey conducted by video game price comparison site Playr2.com, gamers age 18 - 40 may end up dedicating almost two years of their lives playing video games. The company conducted a survey of 1,452 of its members, asking a variety of questions about their gaming habits. The survey found that the average gamer will spend about 1.8 years of their life playing games on various platforms.
The average starting age of gamers was around 9.1 years. Most said they spend an average of 9.2 hours a week playing games. Most surveyed said they planned on giving up gaming when they turned 45 years old.
Playr2.com founder Simon Kilby said that the company conducted the survey because they were curious about how much time customers were actually spending playing games. Kilby added that he expects those times to vary depending on the type of gamer being examined. For example, a Madden player probably spends less time playing games than someone that plays a full-blown RPG or an MMO.
Clearly the survey is unscientific and the evidence is anecdotal, but it's interesting to see numbers laid out in years instead of hours.
Source: Joystick Division