Some programmers get a rush out of optimizing code & saving nanoseconds. A wasted loop or inefficient algorithm is distasteful.
Other programmers realize, for the vast majority of cases, optimizing compute is mostly a waste of time.
Compute is cheap! No manager is gonna complain about the cost of jobs that take a little while longer. No user is going to notice the difference between 50 & 100ms of latency.
Let me be clear: there are times when optimization matters. Making code more efficient can be a huge win, but only if that code is a bottleneck or wildly inefficient.
In most cases, just let the computer do its job. It'll be fast enough.