Also, somebody that I once knew gave me the perfect idea: recycling the parts into other products and selling them. I considered making jewelry and trinkets out of old computer components and electronic parts and selling them on eBay or etsy so that I don't have to be as hurt when I destroy my tech stuff.

Perhaps you could take your furniture and either repair it and sell or donate it or salvage the wood and make something else out of it? Might help you with the negative feelings associated with destroying furniture. Knowing the wood is being put to good use and potentially bringing another person that may be less fortunate joy can make things feel better for you.