I've been flying a lot recently, and have been thinking about why it is so slow to get off of a plane sometimes.

The majority of the slowdown seems to be from people who aren't ready to move down the aisle blocking those who are trying to go down the aisle.

If people would wait until a gap to enter the aisle to grab their bags the whole thing would go a lot faster.

In an emergency you're not supposed to grab your bags, but somehow I imagine this behavior to still play a role.