I've never thrown any out. I've had some in pretty bad shape, but there's always somebody out there looking for a project. I got an old Aria electric guitar that was sitting beside a dumpster at a shop up in maryland. The two horns had been chopped off, it didn't have pickups, pickguard, tuners, or anything but the body, bridge and neck were all there. I planned on revitalizing it myself but never got the time so I gave it to a friend who is working on it now. He's having a lot of fun with it. He cut new horns and glued/doweled them to the body, is refinishing it, and making it better than new probably!
I also had an old yamaha bass that the singer of my old band left at my house, It needed neck work, and the wood on the top of the body around the elctronics was splitting off, a year after the band broke up I sold it on craigslist to the highest bidder and got $100 out of it!
I teach lessons and no matter how many times I tell a student's parents before starting lessons with me that if they need help finding an instrument I will offer suggestions, countless students parents end up buying their kids the cheapo no name or First act acoustics that have action that might not even work for slide! the tuners don't work or hold at all. One time while trying to get one in tune, the bridge literally broke off of the guitar! I always tell them that their kid is never going to stick with it or get anywhere on a guitar like that, so I always suggest they buy a new one and give that one to a younger sibling who will use it as what it is, a toy. That's kind of the equivalent of trashing it, but seeing as it's a toy and not a real instrument, I don't see any problem with it.
I also had an old yamaha bass that the singer of my old band left at my house, It needed neck work, and the wood on the top of the body around the elctronics was splitting off, a year after the band broke up I sold it on craigslist to the highest bidder and got $100 out of it!
I teach lessons and no matter how many times I tell a student's parents before starting lessons with me that if they need help finding an instrument I will offer suggestions, countless students parents end up buying their kids the cheapo no name or First act acoustics that have action that might not even work for slide! the tuners don't work or hold at all. One time while trying to get one in tune, the bridge literally broke off of the guitar! I always tell them that their kid is never going to stick with it or get anywhere on a guitar like that, so I always suggest they buy a new one and give that one to a younger sibling who will use it as what it is, a toy. That's kind of the equivalent of trashing it, but seeing as it's a toy and not a real instrument, I don't see any problem with it.

