It was a snotty thing to say. Even making the judgment that a another person is incapable of enjoying the happiness of others is a really judgmental and overall shitty sentiment. It's doubtful the person you are responding to would have the intimate information needed to make that assessment, further people are ever evolving for the most part. Just a shitty thought all around.

Where do I make that judgement? You're turning it around again. Read my comment, there is no judgement of people whatsoever, only the claim that you should not have kids if you're unable to enjoy the joy of others. Because otherwise, yes, they are likely to make you feel like you're subject to an 18 year prison sentence.

English is not my first language, can anyone explain why people read my comment and reverse the sentence structure?

They do because they see the intent to make that erroneous connection with backup plan of telling you 'only' said it one way and not the other (can't tell my self too). Higher order logic.

Kids can make you happy or tired, or both, too many factors for your parenting to go wrong way. Especially if you aren't rich. Imo, friends and gfs are far easier to get mutual happiness with, because they are self-established. I've lost too many friends to happy families they hate now, so personally I don't get your statement any way around.