What is so bad about wanting a baby to "shut the F up"? Is hating babies taboo or something?

No, you are not alone. I bring earplugs in my purse for when I go shopping and have to hear a baby or toddler scream for 15 minutes because you are correct, the mother is equally rude for allowing her child to ruin someone else's shopping experience in public. There are times when bad behavior is bad behavior. Many times when shopping and my own child started a screaming fit, I would put stuff back on the shelves, take her out of the store, drive home and put her in her bed, and shut the door. But I would never, ever permit her to disrupt anyone else's public shopping experience, church service, concert, or anything like that. Unfortunately, a lot of people are "hey,anything goes and my kid can scream if they want to in public because manners and being polite don't matter no more." Bad society is now the daily normal. Bring earplugs wherever you go. I also keep my earphones and mp3 player handy and plug it in when the toddler screaming gets to be too much for my taste. Sorry. Sometimes I just plain leave the store, go next door, and wait for the people to leave, then I go back and try again. Yeah, it takes time out of my day but my sanity is worth the trouble. ANd now my daughter at age 15 sees the bad behavior of the toddlers in the store and thanks me for teaching her how to behave better, so it worked out, by the way.

Nothing is wrong with not wanting children, I don't want them either, however, it doesn't seem civilized to be in a public place saying that you wish ANYONE at all would "shut the **** up" out loud, especially if you're an adult. You have to keep your composure. It probably hit a nerve with the mom because it wasn't easy for her to get the child to calm down and to have everyone else's pressure is probably no help at all. I also, wouldn't go forcing what she "could have done" when her child already exists. It seems very inconsiderate, childish and uncivilized to act in such a manner in public. THAT is the real issue here.

Nothing wrong with hating babies but you need to learn to keep your big f'kn fat mouth shut.
What happened was that you got triggered by a crying baby and you handled it BADLY. This is a good thing for you to reflect on. In fact it will help your emotional,growth if you can drop your self centeredness long enough to look at it.
Few people like screaming babies , but you had a choice how to deal with this and you failed badly...next time you might do better and soon you may grow up enough to be kind to yourself and everyone else by being gentle and loving when you get triggered.

Hating babies is not the norm. This young mom was obviously deeply offended by your comments and while I understand where you're coming from, babies do cry and there's not much parents can do about it. My mom always told me, "if you don't have anything nice to say to someone, don't say anything at all."

lol