I’m one of three siblings. One of us is child free by choice, me and other sibling have one child each. In my case, we could have afforded more than one but I hated being pregnant, had a bloody awful birth and piss poor post natal care. Put me off ever having another. I have a feeling DS won’t have children, he’s already said as much but is only 23 so might change his mind I guess.
In terms of having someone to look after me when I get old, I’m perfectly happy to shuffle off this mortal coil when I can no longer do the things I enjoy. Absolutely no desire to be stuck in a chair for 18 hours a day with someone getting me up and putting me to bed. My man was 96 when she died and spent the last 16 years indoors with carers four times a day. Not for me thanks.