Always.
I can remember how utterly fascinated I was when I first saw a lady bug which was so long ago I can remember. It just grew from there to the point that I wanted to know everything about them.
That's when it all started. I love them. I've raised Painted ladies for years. I've caught bugs and brought them to school for years ( every time when I got home I'd be in trouble ). XD I remember catching silverfish, pill bugs, and ants in front of my school ( preschool I think ).
Even the teachers and bus matrons helped me with catching them so to speak.
But I can never exactly tell you when I fell for them. I
think I was 5.