I jumped on the white couch bandwagon and have deeply regretted that. I got all sucked into the "It's so easy, you just throw your slipcovers in the washing machine and bleach them occasionally."
I slipcovered my sofa and did not anticipate the amount of crud that would cling to a white couch. It was great for about a year, and it has slowly gone downhill. Not to mention, the cotton does not hold up like an upholstery fabric (like chenille-something with a grain, texture, or nap to it). I can bleach my slipcover, but there is pilling on the fabric that puts this dingy haze on everything. It's gross.
Our lifestyle is laid back, We have a tiny house with no dining room and we often rally around the coffee table for meals. White does not work for our home, no matter how hard I try to force that on my family.
It does however, look great against my walls. The white sofa makes my throw pillows pop and it lightens the room quite a bit. Until you get up close.
And the funny thing is, I'm noticing a lot of "I love white furniture" bloggers are now upgrading their furniture to things resembling the color of dirt. And as soon as I get some $, I'm headed there next.
I think I only like all white if it includes white floors too, and that's a look that's just not practical for my two kids and large black dog. I have a white slipcovered sofa and so far it actually does wash up pretty well. I wonder if it's just a different kind of fabric or something?
I love white, but don't think I would enjoy white walls. There's something about the warmth a little color adds to the walls that changes a space....even if it's just a warm beige or gray! But ya know....that's just me! I was really tempted to do the white couch thing, but am kinda glad I didn't. Not sure it would hold up in our house. I'm still over our beige couches though. I'm tempted by ivory or gray next!
We did the "Cream" couch thing when we were first married...the couches have held up well, but the color? yeah -- not so pretty up close. There are always blankets layered over the various baby stains.
...and to whomever mentioned "dirt colored" couches -- I am quite literally getting new carpet the color of dirt and I am THRILLED! The next best thing to all beat up hardwoods in my book :)
All white walls with the dark trim? That's kind of how I picture my house in my head. I think it's a pretty balls-y look in a really traditional way. And I love it. I might give it a try in a guest room or something and then let it spread across the rest of the house. I'll probably chicken out and do off-white though with lame ol' white trim. I wish I was cool enough to pull off that look.