Here is a story about what will happen if player collision is ever in WoW.
Everquest Online Adventures had player collision. It didnt take a week
before players started blocking access to everything. The only bank
in the town of Freeport was a favorite target. They would stand in
the narrow door keeping everyone from using the bank.
This would happen on the first day of player collision in WoW.
No, we shouldnt have to ignore someone just to use the bank.