Instead of trashing it, why not give it to Goodwill Industries or the Salvation Army. Goodwill will repair it themselves (if they still do that) and sell it, and use the money mostly for job training for handicapped people. I don't think the salvation army repairs things but they may sell it to someone who can repair it, someone will wear it even though it doesn't close, or ship it abroad to people who need clothes.
At any rate, it's not just you, but loads of people who it seems just throw in the trash things they cannnot use instead of giving them to one of these two places or another charitable thrift shop. It's wasteful and I don't understand it, especially from someone who doesn't have unlimited income himself.