One of my sisters (no psych issues) went off social media altogether. She said the things people were posting made her feel inadequate as a wife & mother.

I agree, most people want to paint their lives as perfect. It is far from the reality. Case in point, my sister. She is an awesome stay-at-home mom, but it is a very hard job. I know. I am a stay-at-home mom too (though she has 3 kids and I have only one). Things other moms post on FB, you'd think they never had meltdowns, got upset with their "perfect" children, had days when they felt they just couldn't do it any more, days that were so hard and trying, they couldn't fix dinner because it was just too much. No stay-at-home mom has a life that perfect, that's for certain! If they say they do, they are lying. And no child is an angel 100% of the time, I don't care how cute they are. People just post the pics of themselves looking like a perfect, happy family, cooking outrageously fancy meals or desserts, and I'm sure sometimes it's true, but no way is it ALWAYS true.