I think it's the other way round: having kids means you have other demands on your time. WFH means it much easier to take the kids to school, go to parents even

I think it's the other way round: having kids means you have other demands on your time. WFH means it much easier to take the kids to school, go to parents evening/school play etc. Plus, senior workers are likely to have a larger house with room for a separate office.