Thinking about selling my CD collection = MP3

I am having serious thoughts about selling my 1,500 or so CD collection and going to MP3 playback format. At one time I use to have the time and sit in front of my system and really listen, I mean sit and really get into the music. Now with two kids, and the band that I play guitar in, there is simply no time. My listening consists of in the car or in the house while I am doing something else. I am thinking about ripping my collection to my computer, selling the CDs and my CD player and using a large storage MP3 player as my source. Any thoughts? Anyone else out there do this?