in no particular order

• labor
• pregnancy
• morning sickness
• vomiting
• you are responsible for it for life
• It will not appreciate you
• you will always have an attachment to it no matter how much like crap it treats you
• your body gets misshaped
• you much pay for all living expenses for at least the first 18 years
• you become a slave to it and won't care
• crying
• screaming
• making scenes in public
• messy baby food
• it will follow you everywhere
• you have to get smart and impart all of your knowledge to it
• if it does something wrong you will be responsible for it for the first 18 years
• talking too much
• immaturity for a long time
• arrogance