Colette, I'm sorry about the experiences that you've had.
In a decade of flying I've had only a handful of comments/experiences from my coursemates/instructors/colleagues which might be construed as sexist. On the whole they've treated me exactly the same as my male colleagues. It's the passengers who react in an exaggerated fashion - whether positively or negatively - and make me feel as if I'm standing under a spot-light!