People don't hate kids. I love kids, they're very tasty.
Each table in a restaurant has its own litte invisible bubble. A table with a noisy, happy baby has a bigger bubble. It grew and grew, until it touched the "old fart" guy, and broke all over him and his wife and his food, which he paid good money to enjoy.
Most good people know that kids need special consideration, and almost everyone is willing to deal with a little fun in a restaurant, but good parents should be able to see when their "bubble" is getting too big, and at least make an effort for the people around them.
And, in return, I promise not to smoke a cigar or use my cell phone in a restaurant when you're trying to eat dinner with your kids.
Remember, too, that parents have specially modified "filters" on their ears that reduce the perceived volume of their own children's screams. That guy at the end of the bar who talks really loud also has those same filters for the sound of his own voice.