Using your example, renting the sofa only makes sense if you expect to only need a sofa for about 40 months. I say about because if you're super diligent, and m

Using your example, renting the sofa only makes sense if you expect to only need a sofa for about 40 months. I say about because if you're super diligent, and most aren't, and put the extra 1500 in some investment you're still only going to stretch out the break even point to something like four years. Most people have sofa's more than four years.