I was catching up with a friend this weekend, and as I looked around her home, I finally had to ask: "Where’s the art?" Queue the deep sigh and classic domestic confession: She and her husband couldn’t agree on what to hang. He wanted family prints; she wanted moody, vintage landscapes. Neither would yield, so they made a "compromise"—which meant leaving the wall totally naked for two whole years. I looked at her and gave the only advice a designer with 20+ years under her b