Growing Old

I have been giving some thought to an article I read about 4 women who decided to pool their resources and live together. They are four friends who are retired and were looking for alternative living arrangements. They sold their houses and got rid of duplicate appliances, keeping only the best.
Their goal was to avoid moving into an old folk's home, They carefully drafted a contract between them, outlining how they wanted to deal with one person leaving or dying. They agreed they would buy out the share of the one who left and that noone could move in without their consent (to avoid heirs upsetting the delicate balance they achieved).
I think this is an experiment that needs to be followed carefully. I have started a mental list of friends I could spend my old age with... They need to get along though... I am starting early : )