Raising a little human is terrifying. You have to make sure this tiny body is fed, rested, changed, and healthy. You worry about stepping away, even for a second, when they are taking a bath or eating food (What if they DIE?). You have to try to reprimand them if they are throwing a tantrum in public but really you just totally get it because it has been a hard day.
Raising a little human is expensive. You need more space, clothes, food, diapers, car seats, bed, and sometimes childcare. Thankfully friends and family often help out with some of these expenses which is immensely helpful! But even just the medical bill to bring the tiny human into the world is no small number.
Raising a little human changes you. You start to understand why your parents responded the way they did to certain situations. You suddenly have to think about someone other than yourself and your SO. You think a little longer-term than just a year or two out. You change your priorities and behavior in order to do the best you can for your child. Some people say having a little human limits you. In some sense, it can and it does. But you can't imagine life without them and in many ways you can't even remember life before them.