Because the more you push to the extremes the more compromises you have to make _somewhere_.
This is true in almost all aspects of life, limiting the compromises closer to the extremes becomes a cost versus benefit exercise. Very few fields have the budgets to push the envelope on cost or the requirement of the benefit to even consider it.
This is true in almost all aspects of life, limiting the compromises closer to the extremes becomes a cost versus benefit exercise. Very few fields have the budgets to push the envelope on cost or the requirement of the benefit to even consider it.