http://uk.reuters.com/article/domesticNews/idUKL2957448420080129 Let's see...
Youth:
Pros:
Living at home
Free meals
No real responsibility (chores not withstanding)
Not having to deal with the politics of the work environment
College is still good
Cons:
High school (I'd take work place politics over high school most any day)
Middle age:
Pros:
Living on your own
Actually having money (takes a little bit of time)
Ice cream for dinner
Marriage
Cons:
Realization of 30+ years of work
Meetings
Having to pick up after yourself
Meetings
Dating scene
Meetings
Raising the kids
Old age/retirement:
Pros:
Not having to work
No meetings except for that local council thing you were roped into
Cons:
That whole death thing
There's plenty more that could be added, this is just five minutes worth of thinking.