yes Jim, I think a lot of it's about sufficient preparation and lining your ducks up in a row for success prior to the event...including publicly sweating over the small stuff right here sometimes, before an unfamiliar location situation presents itself.....
Lord knows there are enough wild card factors which can prevent the 'ephemeral transcendant' from being captured: below par performances, traffic noise, last minute changes to mic stand location, equipment breakdowns, aircon intrusion...the list is endless.
It all coalesces down at the the fun end of the spectrum when our skills, equipment, experience/mindset and the performance itself are as good as they can be.
it's probably healthy that there's a sense of minor apprehension and reserve regarding the successful outcome of a field recording endeavour...when so many variables are at play. I always liken it to the thrill of big (or small) game hunting or fishing...the satisfaction inherent in exercising all of ones' faculties and skills to bag a keeper and bring it on home.
If it ever gets boring and routine and predictable...that's the time to find another sport. Of course we all want to retain a high average strike rate, like Plush and Doug T and Norsehorse and Dave Spearritt ...I bet those guys never break a sweat out in the field, cool dudes indeed

....and if they ever make a subpar capture, we never get to hear about it....!