I gotta back @Supernova here.
Context plays a big part in one's handling of the situation. Geography, general living conditions, the extent of the problem and even your immedate surroundings. I don't think judging someone so harshly on it is a good approach, especially not fully knowing or understanding his perspective.
I've dealt with mice several times in various living situations. I used both humane and lethal traps depending my current conditions.