Sort of! It’s true that the longer you wait to have children, the higher the likelihood is that they’ll have a birth defect and that childbirth will be more difficult. Both eggs and sperm degrade, and defective sperm can cause abnormal pregnancies even in a healthy young female. so men shouldn’t wait too long to have kids either. It’s all risk factors, however, and not a guarantee. Women in their 40s have given easy birth with no complications and men in their 60s have fathered healthy children, but people also drive while texting and don’t get in accidents. It’s not great to risk it after you or your partner are about 35, but still very possible.  Fun fact 1: humans, orcas, and elephants all go through menopause. It’s not known exactly why menopause happens, but orca pods and elephant herds are often headed by older females so some theories are that it’s to eliminate the risk of a valuable group member dying in childbirth, or that it’s to keep a valuable group member’s resources focused on the group at large instead of a single new baby. Fun fact 2: Men go through andropause! It comes on much more gradually than menopause and can be treated with testosterone supplements. It also causes irritability and mood swings, and even hot flashes. Assuming you’re a dude, remember that once you hit middle age you should be getting your prostate checked regularly and your testosterone levels checked regularly. There are a shocking number of problems men can suffer from if they aren’t producing enough testosterone, but it’s also not widely talked about (except to make fun of someone). Basically if you’re a dude and you’re suffering anything like severe mood swings and irritability, a decrease in muscle mass and bone density, insomnia, chronic fatigue, higher cholesterol but with the same diet, or depression, get your testosterone levels checked ASAP. Tl;dr there is a wall but it’s an increase in risk factors rather than a hard stop, it doesn’t hit for everyone at the same time, and it hits men too.