I could never have imagined typing this a year ago. But after ripping all my CDs to my computer as lossless ALACs I am a 100% 'committed streamer'. I just can't imagine going back to messing with CDs in and out of cases and faffing with a player. Not routinely anyway.
I did worry that I would somehow lose interest in listening to albums 'correctly' in their entirety, because album-hopping is so much easier with all your eggs in one basket. But it hasn't really happened. Truth be told, I've found myself listening to a host of tracks and albums that I rarely got a chance to listen to on CD because they don't interest SWMBO, and before ripping them and sharing them on my home network I had no convenient way of listening to them privately away from the living room.
My advice to ‘streaming agnostics’ as opposed to ‘streaming atheists’ (who will never be convinced) is this: just do it. Oh and don't sell your CD player. Well not straight away. Don't even disconnect it. When you first start ripping, your CD player is your security-blanket: a tangible reassurance that should you change your mind, you can stop this nonsense at a moment's notice and immediately go back to listening to CDs 'properly'. But the thing is, you’ll find you won't go back. Or if you do, it'll become gradually less often.
Then one day, after you've ripped all your CDs (or a good proportion of them), and you've become used to having your music available any time, any place, anywhere, all accessible via an app on your iDevice or Android, you'll look at your CD player and think 'good God, when did I last use that?!' And instead of it being a security-blanket, you'll suddenly see it as an anachronism from a time when your music was chained and shackled. A time when choosing an album meant squinting at rows and rows of end-on plastic cases, extracting the CD from the fierce grip of the case's inner tray without snapping it in two (or conversely, picking it up off the floor because the lugs on the tray have broken) and then pratting-about with a CD player and its primative remote which usually don't even tell you the album title or track names.
Nope. There really is no going back.