With families they tax based on individual income, but they withdraw support to the main caregiver (child benefit) based on partner's income, so they apply things in different ways to social engineer and regardless of whether there are dependents. So a single person without responsibilities for others could well be paying less tax on same income as a parent with responsibilities for several others. No other country does this.
But there are families without a 'main caregiver', who share the care, or pay for a couple of hours of childcare after school. I don't think that the state should be socially engineering, or giving breaks to some lifestyles and not others. A lot of people say that the Child Benefit system is unfair as two people earning just under the threshold get it, but one person earning just over it doesn't qualify. I see that as perfectly reasonable (if it has to be means-tested at all, which IMO it shouldn't be). Of course a family with two taxpaying workers should get the same help as a family with one worker - they should really get more, as they are paying for childcare, commuting and other work expenses which a family with a stay at home parent is not, and arguably CB should help with that. People should make decisions based on what works for them, and what they can afford. IMO the state shouldn't spend taxpayers' money on prioritising some decisions over others, particularly when they take from a taxpaying couple to give to one where a parent is not working. I am absolutely in favour of child benefit as a way of helping people through the expensive years when they have children, but I think it should be a universal benefit, and not based on income or partner status. I also think that people who want to work part-time should be able to, but they shouldn't expect to get full-time pay for doing so - particularly if it is full-time workers who are subsidising that choice.
I don't approve of married couples getting preferential treatment over cohabiting couples either, incidentally - or of household income being the baseline for benefits when people are taxed as individuals. We should all pay in and all take out as individuals (obviously except for those who are unable to do so). I agree that people caring for the sick or disabled should get support, but not those who choose not to work to be at home when their children are at school. Stay at home by all means, but don't expect other people to work to support that choice - particularly if you are going to make spurious remarks about children being 'brought up by a group of strangers' when you don't know anything about research into the area (which has, of course, been carried out)🙄.
I agree about crafting being a good way to bring generations together. I have knitted since childhood, and as a young woman had to listen to comments about how it was for old people, and also that it was somehow not feminist to have a traditionally 'female' hobby (I know!). My knitting group is mainly made up of older people, because it's during the day and younger ones are at work, but we do get younger people popping in sometimes - usually when they have a problem with their project and can fit in a quick visit. It's lovely when that happens, as we can pass on our tips the next generation.