AgeUK have a befriending sevice where you can visit elderly people, many who say they haven't had a visit from family for over a month. I'd rather volunteer to do that than go to a KH.
Older people are great. I've taught Internet and iPad use to many in my job and they're lovely to talk to, very grateful for help. If libraries close in my county and I get chucked out of my job in April 2018 I might work or volunteer to help the elderly.