Writing about yourself is great actually! I agree with you though, it seems like your line of thinking is incredibly similar to my own. I probably did think and rationalize myself into the sexual orientation I am now to be honest.
You should never feel like you have to label yourself. I didn't for a long time. (Until today actually) This was just something that crawled into my brain and screamed at me to be let out. So I let it out.
Thank you for reading my brain worms! I actually really appreciate the fact that it's being received as well as it is.