I was a road warrior early in my career. I amassed over 4 million miles and still have one legacy million miler lifetime membership with AAdvantage. UA and NW expired out. I viewed air travel as part of my job for which I was well compensated, enjoyed all of the travel perks of renting cars, staying in hotels, getting "free" upgrades with loyalty programs, etc. I lived out of a suitcase for long stretches of time, ate very well and was treated like someone special.
That said, I burned out and could go on for the rest of my life never flying anywhere except for Asia where I have multiple friends, colleagues and close associates and business ties even today long past my road warrior days. We travel business class at a minimum which is very expensive but it is something I got used to and I just can't fly coach on extended stints anymore. We live well below our means but air travel has no budget when we have to travel, it is a non-negotiable component of a trip for us. The main annoyance I have with travelling to Asia is the weather sucks for a good portion of the year so we have to plan carefully, especially for SE Asia. E Asia is not so bad (Taiwan, Korea, Japan, etc.).
I still have a fear of flying, believe it or not. I still get a nervous stomach and anxiety with the thought of flying, mostly borne out of claustrophobia. I don't like crowds and queues and airport security is extremely annoying.
Point is, even someone who has flown as much as I have, it is OK to not like it or to have a fear. I will never lose that regardless of how irrational it is.