Mail Delivered to the Door versus Group Mail Boxes

Today I received from a firm working in the direct marketing field an email about the US House’s proposal to allow the Postal Service to convert 15+ million people to group mail boxes on their street who are currently having mail delivered to their door. The article's tone suggests the proposal was a bad idea and talked how I and my organization should resist the change.
 

The rationale for moving to group boxes is logical. As the proposal allows those with limited mobility to have mail delivery to their door, the rationale for resisting the USPS efforts in this direction is anemic. I am not downplaying the emotional element but it is more tied to people feeling uncomfortable with change.

I've experienced both, mail delivered to the door and group boxes. By far, for three primary reasons, I prefer to have my mail delivered to a group mail box than to the door.   
 

1. Mail delivered to group boxes is more secure than mailed delivered to the door. I don't have to worry about someone, maliciously or as a prank, tampering/stealing my mail. One of the vehicles for stealing identities is through the taking mail from mail boxes at the door step.  
 

2. If I am away for two to four days, the mail does not build up in my door side box and it giving a major clue to a thief that no one is home. Arranging for a neighbor to gather the mail, or arranging for the Post Office hold the mail until I return is diminished.  
 

3. It cuts delivery costs for the USPS by 25 to 30%. In group boxes more homes can be serviced by one carrier than by someone walking from door to door, particularly in areas where walking to the next house could by 40 or more yards away.