That photo of the guys shoving pianos out the back of a truck breaks my heart.
Speaking as a veteran Logic user, nothing beats an actual piano with all its beautiful imperfections and wonderfully particular sonic signature. There will always be a place for true acoustic recordings; pristine digital delivery can sound horribly canned and sterile. That said, yes, you can also use a decent midi keyboard with weighted keys, or hell, even just push midi notes around the screen with a mouse - and get great results.
Finally, yes - you can get pianos for free. You just have to be patient. People are always trying to unload these monsters - little Jenny or Jack failed to take to the piano and now it's time to free up space and get rid of the damn thing.