Flying may get you across many miles quickly, but there is nothing enjoyable about the experience. NOTHING. Trains, on the other hand, are simply a pleasure.
Not long after we had returned from our Christmas trip to Paris, London, and Switzerland, our son informed us that his company was sending him to the U.K. for work. Would we meet him in London for a week? How could we not? We had really enjoyed our time in London in December, and had immediately booked a return for April, but when your child is going to be on the same side of the ocean, you go. We don’t get to see any of them often, so this was a treat.
There was just not enough time between our Austrian adventure and an upcoming visit from American friends to allow us to take a leisurely journey by train, so we bit the bullet and bought tickets on EasyJet. (We prefer taking the train and stopping in Paris for a couple of nights.) I popped for seats in the front of the plane and early boarding to try and minimize our discomfort. We abandoned our reliable roll-aboard cases in favor of large, uncomfortable backpacks so they would fit in the EasyJet overheads. I felt like I was going to tip over backward carrying that pack (although it only weighed about 20 lbs.) on buses and through the terminals.

EuroStar interior, photo taken on our December 2015 trip. Spacious. The TGV and FrecciaRossa trains are excellent, too. We like the configuration with the table between us like you see on the right.
Now to the Planes vs. Trains discussion.
If we have a 3-hour train trip to Milano, we can travel door-to-door—from our apartment in Roma to our hotel in Milano—in 5 hours. We are relaxed, have been given espresso and wine on the way, we probably would have had WIFI access, and there would have been no need to disrobe and be x-rayed to prove we are not carrying anything hazardous.
Our 2-hour-and-40-minute flight to London took 8 hours door-to-door. In fact, 4½ hours after leaving home, we were just leaving Roma, taking off from FCO. I don’t need to tell you what the security experience was like, but we walked about a kilometer through the airport just to get to the bus that would drive us to the gate. On board we ate sandwiches that were 75% bread and the coffee was undrinkable.
We will return to London in April–a trip scheduled and partly paid for before Derek’s surprise voyage so no sense canceling. However, we will do the April trip in style: TGV to Paris for a few days, EuroStar to-and-from London, and a 3-night stopover in Dijon on the way home just because. Our roll-aboard bags will be back in service.