Nest Thermostat 2.0

Ive been eyeing the nest, but really find it hard to justify the cost. My $30 normal digital one has somehow gotten a mind of its own and will change the temp at a random time that it isnt set for, so Im looking for a replacement. I just dont know if the extra $200 will really pay itself off. The wife will look at it as just another object I bought because it was cool when I could have gotten one for a quarter the cost…

aesthetics/materials aside, what made you decide on this vs a standard $50 one? (im just looking for a valid argument to use aside from ‘look at it’)