The word "need" is objectively most useless word in the entire existence of all words, period!!
You don't NEED to do anything!!
You don't NEED to pee.
You don't NEED to eat or drink.
You don't NEED to sleep.
You don't NEED to breed.
Sure, some of these might kill you but it's not like you NEED to do them - they will have consequences but nothing else happens apart of that.
You don't NEED to do ANYTHING!!