>I don't know how they do things in PA, but, usually developers optimize their code because it adds value to the project. Who do you know that is not optimizing their code?

Many people. Optimization - after a minimum level of acceptance has been achieved - is often the last priority in systems. Our systems work at a level that falls within the boundaries of our day-to-day needs, but we have no time to spend optimizing to the nth level as there are 1,157 defects that have nothing to do with optimization that have a higher priority.

Just my dollar's worth.