Absolutely, 100%, should you optimise for your resources. In a lot of scenarios those resources aren't CPU, HD, memory and bandwidth, instead they are developer

Absolutely, 100%, should you optimise for your resources. In a lot of scenarios those resources aren't CPU, HD, memory and bandwidth, instead they are developers time. But certainly if computer hardware becomes more of a bottleneck (cost, time, etc) than man power, then optimising for hardware makes sense. Like most things in life, it isn't binary, and I believe most developers already embrace this, making compromises in order to meet deadlines, create maintainable and debugable code, writing code to help with tomorrows tasks, learn new techniques but attempting to apply new coding ideas that may help in future tasks, make code run optimally enough for the given scenario, etc.