If you have an old couch you want to replace you might call your local trash pickup service to find out how to dispose of it the right way. They may tell you to place it on the curb with a sticker. However, if you try to do the same thing with your old computer or laptop without doing more, you’re asking for trouble.
Identity thieves love to get hold of discarded electronics that might contain valuable personal information. Folks who religiously shred old bank statements may not consider doing the equivalent when disposing of their electronic devices.