I've been like that since I retired - it's slightly worse now, I used to know it was the weekend at least because OH was at home, but he's home all the time now!
I don't count it time lost at all. We're planning on moving house in a year or so when my OH retires, and this has been the perfect time for decluttering, getting rid of stuff that has been sitting around for years and slowly redecorating. It's actually quite a relief to know that when we come to sell it's not going to be a mad, mad time trying to get the house in order. Yes I miss seeing people, but hopefully in a few months or so we'll be able to see them again and I'll have more time for them.
To think that London, or anywhere else for that matter, does not belong to any one demographic