I think being horribly insecure about my skin and appearance has actually turned me bisexual. I started staring at men's (and women's) skin to compare them to mine, and eventually my bitter, envious, grudging appreciation of the beautiful flawless ones turned to actual attraction. However, as the attraction is limited to the top 3% of the young male population, and I don't even bother looking at or thinking about women with above-average looks anymore since average-looking ones provide an estimated 95% of the utility for 20% of the pain, I doubt I'd ever get to act on it even if I wanted, so in the end it doesn't matter