Thermosetting polymers are less likely to be recycled than thermoplastic polymers because: Thermosetting polymers are less likely to be recycled than thermoplastic polymers because: Some other reason. They are so cheap that it is not worthwhile to recycle them. They cannot be re-melted by heating to form into new shapes. They are so durable that there are not enough thermosetting polymers in the waste stream to set up a recycling program.