Now that I'm married, I attend a student married ward. Most people in the ward don't have kids, but a few do. Most of those kids are small babies, so the only distractions they provide are their cries (usually quelled quickly with a bottle) and their cuteness. However, there are a few couples with kids, probably 2 or 3 years of age.
Fact: I have a really hard time not judging people who let their children run wild during sacrament meeting.