I have some of the same feelings about Alternative, or Gender Neutral pronouns that you do. I find that they can be exclusionary to people who are just trying to deal with you in every day life.
That being said, early in my transition I went by They/Them, which is a Gender Neutral pronoun, for my own comfort and because of my own insecurities.
Gender is on a spectrum, so there are a lot of gradients between the most Masculine and the most Feminine, and there are also people who feel neither masculine nor feminine. I accept all of these people, and think that their identities are valid - But trying to get our language as it stands right now to wrap around them is a problem.
We don't want to change the people, so we have to change the language. We just need to... y'know... agree on a gender neutral pronoun.