What’s Considered Too Old To Have Kids — for men and women?

I was reading an article recently about the 10th President of the U. S. — John Tyler. He had 15 children, with two different wives. The last was born when he was in his 60s I think. So apparently guys father kids in their 60s and 70s. My wife is ‘fixed’ so we’re not having any more kids, but a single friend of hers has asked her about me providing the sperm naturally, for her to get pregnant (she’s 39). She wants me to remain anonymous, and has already had a document drawn up by her attorney. Apparently I have plenty of mobile sperm in my semen after having my doctor check. I’m just wondering if it’s a good idea to father a child at my age, even anonymously, with no obligations. My wife thinks it’s fine.

What about women? What’s too old for them to have kids, assuming they’re still fertile?

What’s Considered Too Old To Have Kids — for men and women?
Post Opinion