Yes, I realize most trips are not unicorns and rainbows or pure Pollyanna, and not Highway to Hell either lol. I'd guess most of the time there's some good mixed with the not so great.
Could you describe the highs and lows of one of your travels (or a part of the trip) with a song lyric or title? Yes, you can use It's A Wonderful World or the aforementioned Highway to Hell but both are a bit cliched.
I'll start. High: After not travelling much for about a 20-year period we booked a trip to Ireland. Upon takeoff from Dulles (Washington DC) I had a surge of pure joy realizing we're really going there. That didn't bode well for sleep of course, but I'll use the Beatle's "Getting Better" as the mood of that moment.
Low: Probably arrival day as I can't sleep worth a darn on planes. Zombie day. It's just plain hard. I envy you sleepers. I recall sitting down on a bench in Hyde Park and nodding off, or sitting anywhere for that matter. I'll go with another song by the Fab Four: "I'm Only Sleeping."
Oh, and an extra one: When I was deployed overseas in the Air Force for six months, upon returning to Dulles I saw my wife, Mary, and Tom Petty's "Here Comes My Girl" came to mind. I guess that's travel related? Oh, well.