If some living things do not reproduce this could be considered a defect or a genetic mutation in those people. If we take humans for example, if most humans reproduce and some don't because they cannot (if a guy cannot produce sperm) this doesn't mean that he isn't alive, it just means he was born with a genetic mutation which doesn't allow him to produce sperm needed for reproducing.
Eggs do not grow, they are produced by other animals. Such as chickens.
Omg are you ok? if you do feel that way, think of alternatives that might prevent you. for example, maybe play around with an eraser or make knots.
do stuff you enjoy as well :)