Ohhhhhhh ok. So what you were really saying is that in your *hypothetical* world, train travel would be more convenient than air travel. Missed that part.
So much here.
1. If you're arriving at the airport 2 to 2.5 hours early, you're wasting your life. No shit. Only my grandmother shows up that early. And even she is wasting her life when she gets there that early.
2. I went to Europe after having last visited 10 years prior, and lets just say, train ticket prices are now exorbitant. You might be able to catch a cheap fair between London and Paris, but if you want to *see* Europe, well, it aint the early 00s where your gonna grab $250 Eurail pass and see the continent. Sorry to break it to you - those days are long over.
3. Ryan Air is cheaper.
4. German Wings is cheaper (as long as their pilots don't run you into the Alps).
5. Sweet spots might exist in Europe, but in the US (places like LA), you might need to fly from Compton to Huntington Beach to achieve the 2.5 hour *pressure* relief you're talking about. Last I checked, there's not many Compton to Huntington Beach flights available to the general public. You're comparing apples and oranges. You got to take the 405. There is no other option.
Those are facts. I don't know what you're talking about. Yeah, there is room for rail and trains in this country. Why the F we have so many big rigs going coast to coast is beyond me. All that shit should be moving by rail. Get the fuck off my interstates. But yeah with your theme: trains should be a thing in this country. The point is, right now, they are not. They could be, they should be, but they are not.