To build on your comment: cost of living has a surprisingly fixed price. Different qualities of living don’t cost massively different. If the average person has to spend their whole earnings on living an “average life”, if you make 2x and want to live twice as nice of a life, it likely only cost 1.5x the “average life”. Earning 2-3x opens up a lot of luxury even though it may not seem like it.
If you have a 2 stage furnace, this may actually be a thing.