And I also didn't say "because of things you cannot know." Yes, there WERE things that I -- and perhaps others -- cannot know, but I also had plenty of evidence I was ignoring because it didn't fit my personal experience. There were studies, stats, research, and yes -- an overwhelming number of personal anecdotes from too many credible women for me to have ignored the possibility for that long.
I still do not know how pervasive or deep the problems of sexism are -- this is not a domain I have studied. But I was wrong to have used my sole personal experience as evidence that there wasn't really a problem.