Do you want to retire? If you retire early, do you forfeit a chunk of your pension, can you afford that.
70 or 140 miles a day on most roads in England is a challenge. The roads are extremely busy. A 70 mile journey is likely to take 2 hours. A full day caring for an infant, then a long drive home. A friend does this, she often stays over to avoid the stress of the journey home. So two full days after which she’s tired.
There will also be emergencies, when the little one is poorly, can’t go to nursery, or mum is ill and needs some help.
Also, baby 2 often arrives not long after baby 1. If you have other children, there may be children arriving there. Don’t want to be a grump, we’ve done years of child care, it’s lovely to spend time with them and great to support our adult children. We need to look after ourselves as well