I thought that way about insects too, but I don't know that all of them are so simple!

https://www.youtube.com/watch?v=dW-AiN2lKDM This woman who took care of a bumblebee

https://www.youtube.com/watch?v=dW-AiN2lKDM And this guy who took care of a butterfly that willingly stuck around.

I know Dodo kinda plays up the heartstrings but seeing behavior like that from these insects really amazed me. There is even literally a video where a man removes fuzzies stuck to the feets of a wolf spider and it LETS him! And he's done this multiple times! So cool. Insects make me squeamish but it's still fascinating. Clearly some higher species of insects seem capable of feeling trust.