Why? Because I can.
Since the beginning of time man has strived to conquer, learn, and adapt. His ability to control and culture the environment has seen civilizations, some arguably more advanced than the current, rise and fall over the millennia.
Invention and design have created a modern world of incredible diversity. War and peace, politics and industry, science and medicine, all shaping the future. A future difficult to predict, going by the past. Living in this ever changing world can be a challenge at the best of times.
Sometimes you just have to step back, take a deep breath, and shout "Screw all that. I just wanna play games!"