I prefer to access the QB website from my iPad because it's faster to toggle between subjects than on my computer. I love to listen to music with my headphones while reading books on it. We love internet radio because conventional radio has too many commercials, so we turn it on take it from room to room around the house. I purchased a portable wireless keyboard so when I'm away from my computer, I can do emails easily. I can't live without my iPad because of the many useful apps they have out now (yes, I spend way too much time on Words With Friends). My newest favorite app is the one that I can send and receive text messages (don't understand how it "knows" my cell phone since it doesn't have cellphone capability), but it does! We love to watch Modern Family in bed - it has many reruns of our favorite TV series.
It won't replace your computer, but it adds so much to my life that I would replace it in a heartbeat if anything were to happen to it.