Why can't medical school be 5 years?

Id like to invite opinions on this. I am not trying to bash the medical school system, although some changes may be needed. I'm just curious, what I constantly hear from physicians is there are many more skills required beyond your curriculum in medical school which largely focuses on healthy anatomy/physiology -disease-treatment . But skills I hear are motor skills, humility (Especially as a Ms3-PGY '''') , compassion, practice management/ insurance billing, ethical decisions, and even... Why can't medical school be 5 years?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums