My favorite thing about digital pianos are the HEADPHONES! My wife and even the cat agree. Not only does the piano sound fantastic but you can practice away in your own little world right in the same room with anyone doing just about anything: Meditation? Sure! Reading? YES! Watching television? OF COURSE! Hot yoga? Well, let's not get crazy here!
I've had a digital for a while now. I bought an Kawai ES110 several years ago to go along with my grand. I sold the grand and knew I'd be without an acoustic for a while so I upgraded to a Yamaha P525 so that's all I have at the moment but I think they compliment an acoustic marvelously as long as you get a good one with a great action.