Not in THIS world -- your spaceship landed a while ago, and the rules of whatever planet you're from don't apply here.
...It's called "you move, you lose." You leave the line, you give up your spot to the person behind. ...The ONLY time I'll entertain letting someone cut in front of me is to return after a bio-emergency.
Perhaps you are right. Maybe we are from different worlds. Let’s take a look at how things work in these different worlds.
You go to a movie theater. In front of you in line are a young man and woman on a date. The man says to the woman: “There is no sense in both of waiting in this long line. You should go get the popcorn and re-join me in line when you are done. She leaves and returns 10 minutes later and seeks to re-join her date in line. Inasmuch as you detect no bio-emergency, you inform her that getting back in line is rude and improper, and suggest that she go to the back of the line. In my world, she re-joins the line without issue.
On the way home from the theater you stop off at the grocery store. You head for the deli where they have a “take a number” system. The woman in front of you takes number 77. You pull off number 78. You look up and see that they are now serving number 34. You wait for 20 minutes at the counter watching the deli worker slice everyone else’s bologna. The woman who was in front of you decides to use her time more efficiently and do some shopping. She comes back 15 minutes later with her cart half full of groceries, but in plenty of time to hear her number called. Sensing no bio-emergency, you tell her that she is being rude and that by leaving the deli area to shop, she has forfeited her place in line and must take a new number. In my world, she places her order without incident.
Finished shopping, you take your cart to the front of the store. The check-out lines are packed. You are fourth in line. In front of you is a couple with a full cart of groceries. The wife says to the husband: "Oh dear. We forgot the milk.” The husband says: “Don’t worry dear. You hold our place in line and stay with the cart. I will go get the milk and come back.” When the man returns, you ask him if he has had a bio-emergency. He looks at you with frightened confusion. You then tell him that it is rude and improper for his wife to have saved his place in line, so he should take his milk and retreat to the back of the line. In my world, the man reconnects with his wife and they check out in front of me.
And finally, in your latest trip to WDW, you are in line for Fantasmic. The family in front of you consists of a father, his wife who is 8 months pregnant, ten year-old Timmy who broke his ankle playing soccer and walks with crutches, and 5 year old Cindy who is fidgety and cannot stay still for 10 minutes let alone an hour and a half. The father says to his wife: “Honey, why don’t you and the kids get out of line and go sit down somewhere. You are exhausted. Timmy’s foot is swollen and Cindy is bothering everyone around her. I will call your cell 15 minutes before the line is supposed to move and you can re-join me in line.” When the mother and her two children seek to re-join the father in front of you, you tell them that they are rude and should go to the back of the line. In my world, I scoot back a foot or two and let the family back in line.
In my world, if I am the 1,000th person in line, I don’t give a rat’s ‘you-know-what’ what the 999 people in front of me do, as long as when the gates open, I am no more than the 1,000th person let in the door. In your world, somehow, what others do bothers you, even if what they do does not impact your ultimate outcome.
Indeed, we are from two different worlds. I hope I never have to live in yours.