Architectural details are something we'd all love to have in our humble abodes. Think tin ceilings, wainscoting, and exposed brick--all of which are really expensive (tin ceiling is around $40 a square foot, plus the labor). Reclaimed barn wood is also really en vogue right now, but it costs a pretty penny to source it. You may want your own library, but you live in a studio...and you don't have that many books. More than anything, most of us rent, and don't want to spend the money to install these expensive interior decor features, only to move out a year later.