I'm terribly judgy but I really try not to be. For me, it's seeing people get married when they've already got kids; second marriages where kids are involved are different. It's so irrational and I find myself having a severe word with myself whenever I find myself judging inwardly.
For me, they're doing it in the wrong order, I think it's horrifyingly stupid to have a kid with someone who you are not married to. I really am a nice person, I promise.
Other things I judge: people who are loud in public places or shouting in the street, shirtless men in public - it says to me "this person is trouble and must be avoided" - and people who cheat on their partners (ESPECIALLY when kids are involved).
My sister left her kids for another man, went back and then cut off the family (us) who had helped her during that time. She frequently posts things on FaceAche like "my kids are my world". Really? They were really your "world" when you left them crying for a nice bit of dick. Sometimes I hate people.
I'm a little premenstrual and may regret this post.
I must add that I don't actually do anything judgy in these situations; such as glare, look funny or say anything. I just feel irrationally judgy and then have a very sharp word with myself because I must do things that are judge worthy every day.