I used to have a very low opinion of kids younger than 5, and genuinely had no idea what they were capable of. I remember having similar thoughts about parents grieving babies, because for milennia we as a species had to deal with children dying all the time, to the point of not even naming them before certain ages. I have a toddler now and boy did I underestimate them. Did you know some speak in full sentences by two and a half? We taught our kid sign language when he was 8 months old so he could tell us what he needed, and by ten months he was telling us he loved trucks, had a surprisingly high tolerance for hot sauce and was a major cuddle bug who had a different favorite color every day (but mostly yellow and blue). He’s three now and knows how to crack jokes, build block castles, can do forward and backward floor somersaults, and even can even do some basic rock climbing. I have parent friends with kids similar ages, one has their kid writing already, another has their kid riding a bicycle, all under 4 years old. They come out of the gate with very distinctive personalities, and every kid is different. I think if you actually knew a toddler well enough to get to know them, you’d realize just how quickly they become a fully realized person.