As a 32-year-old with 3 kids, my parents are still in their mid-50s and can watch our kids for a week while we go on vacation. My father-in-law passed away last in his mid-70s (my mother-in-law is amazing and is a huge help, but she can't watch 3 kids alone for a week). There's a good chance my parents will be at my kids' weddings.

When you're 83 and your kid is my age, he'll probably wish there was anything he could do to make you 20 years younger.

I'm not saying you shouldn't have had a kid, or anything like that, but I don't know how you can suggest that it will never be a problem that you are a relatively old father (versus if you had kids in your 30s, other things being equal, which obviously they aren't).