@SuperbLyrebird I am a bit baffled by your posts tbh. Your original post made it clear you feel a bit sad that you will be 70 when your DD is only 29, but then you went on to come up with a bunch of reasons why it's actually OK, and no problems will ensue...
To be honest, I am so glad I had mine younger (mid to late 20s,) because I am early to mid 50s now, and they are in their mid 20s, and I get worn out a lot easier, and am ready for my pit by 10.30pm some days.
No matter what ANYOne says, the vast majority of people will start to wind down, and become more weary and tired much quicker/easier when they get past 45 years of age. It's a biological fact. They will also start to develop more ailments.
When my (2) kids were primary age to mid teens, I took them to rock concerts, and shows, and took them to lots of extra curricular things, and hobby groups, and ran them around to their friends like a chauffeur, as well as working 3 days a week... I was in my late 20s, and my 30s for the most part, (and in my early 40s when they were mid to late teens.)
If I had been in my 40s when they were babies, (and primary school age;) and in my 50s/early 60s, when they were teens, I would never have coped. Maybe a few people do. It would not have been for me. The thought of having a primary school aged child now (in my early to mid 50s) fills me with horror to be honest.
People always come up with stories on threads like this, of this person and that person, whose mum had them at 23, and then died at 45 anyway, leaving their child motherless at 22. And also stories of all people they know who are 75 to 80, and still working, and running marathons, and who could run rings around women a third of their age.
But the fact is that if a woman has their child(ren) past their early 40s, the child(ren) are FAR more likely to lose their mum whilst they're still young. AND - as much as people hate to hear this - the young adult IS a lot more likely to be a carer for an elderly and infirm parent when they are young and should be enjoying their life and their freedom. (OR when they have young children themselves, and need support from their mother.)
Either way, a young person in their late teens/20s/early 30s, should not be having to support and care for an infirm and elderly parent...
It's unfair on the child, and quite selfish IMO to have babies past your early 40s...