Know a guy that fits that description. It's a cross between "because they can", and because things really do suck.
A lady at work when I just started mentioned off hand that she found it refreshing that not everyone in my generation is lacking in education or drive. I reminded her that folks in my generation that work hard, are well educated, et al are plentiful, but low profile. The nail that sticks up and all that.
On the other hand...
Basically, every person my age believes life will be worse for them than the preceding generation. I doubt they are wrong. There is no such thing as job security, loyalty, or whatnot. Perhaps it didn't exist previously either, but the perception is now that no employer will return even a fraction of the loyalty you put in. It's easy to become jaded, cynical and give up. Doing what one can in the face of bad things is not an easy task. There are times when I question the wisdom of all those hours I spent gaining knowledge, working hard, etc.
My take out of this is that I want to start my own business someday. I may succeed, I may fail, but I've worked in the military, government, publicly held companies, privately held companies. I'd like to work for myself. Maybe someday escape the rat race.