In my experience, the reason people get mad when questioned like that isn't because they're unable to justify it. It's usually because you're insensitively pest

In my experience, the reason people get mad when questioned like that isn't because they're unable to justify it. It's usually because you're insensitively pestering them to describe their opinions in careful detail when that's not a conversation they're interested in having at that time. Kind of like how when someone's complaining to you about a problem and they get angry when you keep pestering them with solutions, because they aren't looking for a solution and just want someone to vent to.