Silly question. Obviously lots of them will. My older DS (16) has always said he'd choose to have lots of dogs rather than having children. However, he turned to me this morning and said, "I'm not depressed or anything but I don't see how anyone of our generation can contemplate bringing kids into this world given climate change". He seems fine in himself so I'm not worried - tbh, I often (secretly) wonder the same, although it sounds so extreme. I have two DBs and quite a few friends who haven't had children so it doesn't seem strange at all.
However, my DM was obsessed with us producing a clutch of grandchildren and some of my friends talk of looking forward to it one day as if there's absolutely no question it'll happen. Not sure what my point is other than do you see your children questioning reproduction in a way our parents' generation may not have done?