join the 21st century
I think anybody these days rolling into a major capital city terminal 35 minutes before they expect a planes wheels to be moving (and I'm guessing the OP is one of those who expects the wheels to be moving +/- 2 seconds of departure time and will be looking at their watch theatrically when this isn't happening) isn't really on the same planet as the other 3bn or so inhabitants of earth.
I would really try and understand the world doesn't revolve your needs and sadly air travel is now like bus travel. Sir won't get Sir's jacket taken off him by his stewardess and neatly shown to his seat where a cold aperitif awaits. I'n guess Sir was too important to get to the airport early enough due to important meetings with important people, and was too important to read down to the bottom of his email to see the fine print!
So, get on, get to the airport well early, relax, and life will be easier. Don't like it, get a job where you don't travel. And holiday in Cornwall.
G