No, you're not alone
Here's another PPL with a fresh IR(R), 130 hours, with a fear of heights and vast open spaces.
Similar thoughts are on the back of my mind sometimes when cruising at FL300+ as self-loading cargo. I have never actually got to hard numbers but am a firm believer in safety of the passenger flight, i.e. that the probability of getting into trouble there is comparable to being run over on a zebra crossing or killed by another driver on a motorway.
I love watching the Air Crash Investigation series and I think that if something like that happens in real life, it is nothing like in the movie. I can't help thinking that most episodes get dramatised as otherwise fewer people would be watching.
Happy landings,
/h88