That's an excellent point. I have no problem purchasing a new phone every year, because I'm well-off and consider it a new toy (don't worry, I give to charity t

That's an excellent point. I have no problem purchasing a new phone every year, because I'm well-off and consider it a new toy (don't worry, I give to charity too!). I recently replaced my old $15 thermostat with a $200 smart one. The old one lasted for a decade and a half (for $1/year), and is still completely functional; I really hope the new one lasts as long, but I really don't know that it will. What I absolutely want to avoid is having to buy another smart thermostat in a year, or five years, or even a decade. Will I be able to avoid that? Probably not, but … we'll see.