I've been very fortunate in my lifetime to travel, and see and good portion of the world, with most of the traveling being pre 9/11/2001. Even in those days I dreaded the time spent in airports, and aircraft.
Pre 9/11 it was bad enough to spend 8-16 hours airtime on international flights in an uncomfortable aircraft. And since I was always paying my own way (no expense account, etc.) I had no choice but to fly coach. But back then on most international flights, the food was tolerable, and the flight attendants pleasant, and tried to be accomodating for the most part. Checking in at the gate, and customs were pretty easy then too.
Post 9/11 I find air travel to be so obtrusive, that if I can't get there by automobile, or train, then I just don't go. Just the incredible amount of BS required before you ever get on the aircraft is untolerable! The airlines are partly to blame as far as international flights are concerned. They should take a few seats out of the coach section, and give the passengers a decent amount of legroom, and comfort on the long flights. For me, this would offset some of the BS new hassle before you ever board the aircraft. After all, the travelling portion of the trip begins, and ends at the airport, it's not just the airtime portion. And the flight attendants seem to have an ever increasing bad attitude towards the passengers. The food seems to be on an ever increasing downward spiral too.
I've got a free trip to Europe that I'll probably never use. All things considered, it's just not worth it to me.