When my brother and I were kids, and our parents were out for the evening, we decided to get our parakeet ripped. A totally stupid, clueless, and cruel decision.
We blew pot smoke at his face for a while, and then he took off to fly around. He immediately returned to the table top, and hovered in place for close to a minute. When I saw him in his landing pose, wings up, flapping like crazy, I instantly regretted what I had done. I figured if he kept hovering he would soon get a heart attack. So I grabbed him out of the air and held him for a while, then put him on the table again. He looked OK so I put him in his cage. I felt so terribly guilty. I still feel keenly guilty about that even today. I am now convinced that people who don't understand their pet can do just about anything to it. I'm so sorry about what I had done.
Also, I've been let down by the iguana caregivers who I had paid to look after them. Once I came home a day early, to find these people at my iguana's cage, tying to make up for 10 days of neglect. They had cheated me. I was SO PO'd at that moment.
From then on I had find "dog walker" type people with a long-standing good record who were willing to keep track of how they looked and acted (few are willing to take charge of an animal they are not very experienced with), and even boarded my igs with an exotics vet from time to time. I used to leave an open credit card charge with my exotics vet in case anything bad happened.
So, yes, I have a certain level of mistrust in people who say they are willing to look after an exotic pet of mine.