I took redundancy in 2008 (age fifty) from the steel industry (the writing was on the wall, company now gone to Russia) went self employed for a couple of years before the recession put paid to that. Now semi retired, drawing a small pension and full time legal guardian (adoption) life is "full on" not enough hours in the day, to be honest I don't know how I found (or would find) time to work at a full time job. I am fifty eight in ten days, it beats the hell out of working until age sixty five or later.
The only downside, if you want to call it that is by the time our young charge is sixteen I will be seventy years old, I will in effect have spent my entire life raising children, C'est la Vie.