Well done Gally for tackling the king-size mattress - you deserve a medal! I hope that things are going OK with you.
When my friend had an op and her OH had to look after her, he was very independent, refusing all offers of help. His Waterloo, however, was changing the duvet cover, and my friend caused great hilarity when describing how, after about 15 minutes of struggle, her OH finished up sitting on the floor inside the duvet cover, unable to escape! - and loud expletives were emerging from under the fabric - I wish I had been there!
I am not very good at being on my own - although I do enjoy moments of peace. I write poetry and quiet is a help with this.
I sometimes wonder whether our tendency toward one-age communities for people who are elderly is a good idea. I have always seen great benefits in a generational mix - but it's not for all I guess. I would hate to have no contact with young people or children - when there are concerts/shows at our local village school everyone is invited - I think that is a very good thing.
I think the key to keeping well in old age is to have interests, whether they are ones on your own or with others. My Dad (91) likes nothing better than to watch the TV - and I look on this positively - he is learning new things from documentaries, getting excited by tennis matches etc. Other elderly friends are dashing about pursuing their gregarious interests. Horses for courses really!
But old people do need to have others on tap in some way for help when needed.