Queer person checking in. I too dislike the F-slur because like you say, it takes me back to the worst periods of my life when that was the worst thing you could call a person.

When I was a kid, the common way to express that you didn't like something was to call it gay. And usually it had nothing to do with gayness either, it'd be like "You signed up for soccer instead of hockey? That's pretty gay." "Math class is gay." "Homework is gay."

Even before I knew I was queer that bothered me. And the funny thing was if you called someone out for it, they'd weasel out of it by saying they didn't have anything against gay people, you just call things gay if you don't like them. They just didn't see how that was wrong which made it even more frustrating to me. Like, they admit that gay = bad but then say they have nothing against gays? Well, what more can you expect from children?

Nowadays it doesn't seem like things being gay is so bad. I've definitely proudly called things gay, and it feels like the word 'gay' is being taken back. So with time maybe that can happen with the F-slur, but for me now it's still a super triggering thing.