Currently 28, but the first to consider true "ER".
My father's parents have always been the 'work till you drop' type, although his father/mother handed over the business when he was 60. So, techincally, they sold out just a tad early, but his mother still does some of the bookwork (currently 83), and his father passed on in 1999 at 81, and if his prostrate cancer hadn't slowed him down he would have still been running around picking up checks, taking out permits, buying tools, etc.
Before wandering across this website in September 2004 (my FIREd epiphany), my long-term financial projections had me stop working at about 60. I suppose I just never thought I'd have enough money to really call it off in my late 30s/early 40s like I hope to now...although, in all fairness, my models before assumed full financial funding if I were the sole breadwinner of the family for worst-case scenario, and I estimated I'd need about $3-4 million.
My brother (35) is too much of a 'enjoy life'-type that spends a vast majority of his funds, and would have no hope of ER unless he drastically cuts back (plus, he's marrying a 28 year old lawyer who, although makes a fair salary, spends even more of it).
My one sister (34) has financial problems from a divorce, plus has money management issues of her own, with 3 kids, and will work until she drops (and will piss through any inheiritance that she might get)
My other sister (32) is married with a child. They have good fiscal sense, but I don't know if they're looking to ER necessarily....but, if I put enough bugs in their ear ("Don't you ever wonder what it would be like to not have to wake up in the morning to go to work?"
), they might start to consider it.
My parents are 64, and partially retired a few years ago. So, they slightly nudged the ER stretch...but my father still comes into the office when he's in town, and still bids a few projects every now and then, so he's not officially ERed...but, then again, he's the type that can't sit still and enjoy a sunset, and he has difficulty thinking of things to keep him occupied. So, he relies on his career habits from the past 30 years to occupy some of the time.
But, I realize that just as much as I'd love being free from a job, some people love being free from 'idleness' and not knowing what to do with their lives.