"Why do we have to use labels? Why can't everyone just be themselves and be accepted?"
It's to do with language.
Before I realised I was grey-ace, I didn't identify as asexual (I had some misconceptions about the definition of asexuality, and as I was in love and romantically attracted to my partner, I thought that was sexual attraction).
But I also didn't feel like I quite fit in with the heteros. Everyone seemed OBSESSED with sex, and yeah it's great, but so is chocolate and a cat on your lap and a good book and no work the next day.
I thought I was alone with how I felt and that everyone around me was SO WEIRD. It's weird to want to bang people you went to school or work with! How can you possibly find them attractive?
Even when I looked up asexuality, I still didn't really identify as ace because, as I found out when I found the label, I'm sex favourable. I don't usually initiate but I'm happy to participate. It wasn't until I read some books with ace characters talking about the same exeriences I felt, and then I looked up the term 'grey-ace', that I finally realised I was on the ace spectrum.
If there was no word for asexuality, I'd still feel like I was a loner and outcast, 'weird' among all the allos. If there was no label for gray-ace, I wouldn't have found my home on the ace spectrum. Because I could ONLY identify as allosexual, I would feel like maybe like there was something wrong with ME. It would affect my mental health. It affected several of my relationships in the past. Thinking I was the same as everyone else, just different, affected my whole goddamn life.
Once I found my label, I felt so much better, knowing that other people experienced this as well.
Labels can help you feel not so alone, and in that way, they are powerful.