Do you think that's fair? What about the people behind you? What if the guy in front of you let multiple people into the A line? Is it cool to let in 1 person but uncool to let in N people where N is greater than 1?

What if I get there right in front, then let six or seven buddies jump in with me, and then we hog the entire bulkhead and exit rows?

Where do you draw the line?

The thing that bugs me that a lot of people who do this try to game the system to maximum advantage for themselves without concern to others. The save the best seats. They cut forward in line. Did it ever occur to you that if you arrive in the line first and your wife arrives a few minutes later, the courteous thing to do might be to go back to her place in line if you want to board together?

To me, the right solution - if you are absolutely are incapable of sitting apart from a traveling companion on an airplane ride - is to (a) both check-in and print boarding passes at home, and (b) go through security and to the gate together. If you don't do that, you shouldn't expect to be able to kick everybody else in the teeth to get what you want.