Thanks everyone. Reading othe MN posts too I think we need to try and plan for some uni fees, driving lessons, and housing costs, then be around to do regular childcare. Some help is better than none.
Not having had much help from family, i was not expecting much myself, until I came across people who do have wider family support and see how valuable it is.
It started at uni when I came across kids getting parents help to buy supplies regularly, to help on essays and job apps, to no holiday work required so they could do unpaid internships and stuff. Their uni costs were all paid for by parents and grandparents. Needless to say this helped them all to succed with big jobs. Ive done fine myself, but definitely at a slower pace while I worked stuff out and I will not make top level as a result.
Then when we had kids we see grandparents do a day a week care or hols, pay for school/nursery fees, to day trips. Neither of our parents are reliable enough or near enough for that, but when DH and I are rushing around burned out both working, doing up our broken house, getting kids to and from school, managing illnesses, we just realised how we are coping great without help, but have no contingency for either of us getting sick or any job issues.
My mum is constantly saying how lucky I am to have a husband who does stuff like change nappies. She doesn't like to acknowledge she was mostly staying at home with us so could manage that stuff better. There are def downsides to being a SAHM though IMO. There's no way we can afford to live on one income and have the kind of house and life they have now.
In short I dont want my kids to be spoilt and privileged, but equally i recognise they will have challenges worse than I did, so feel the need to help.