“Everyone does it” is a head count, not a permission slip.

How many people are doing something tells you how common it is, and nothing else. The count feels like an argument because being outnumbered is uncomfortable, and discomfort is very good at impersonating logic. Popularity and rightness overlap sometimes, mostly by accident. Treating that overlap as a rule is where people get themselves into trouble.

When you hear the phrase, or catch yourself reaching for it, swap it out for the actual reason. If a real reason exists, say that instead. If nothing is underneath, you have just learned something useful about the decision.