[TeMPOraL]

I agree there's a case to be made. There's a strong case to be made. In fact, those of us who heard "get a life" shot at them probably made that case many time. The case is this: someone's hobby of tourism / enjoying cars / writing stories / riding horses / all kinds of sports / engaging in gossips and interpersonal dramas / whatever else mainstream does is at least as valid of a lifestyle as my hobby of geeking out about spaceships and writing code for fun.

This is what many of us had to (usually unsuccessfully) argue to our colleagues (and family members!) during school years, so if a full-blown dismissal of "get a life" phrase is a knee-jerk reaction, it's unfortunately a well trained one.