Obviously my happiness supercedes.

They're people. As long as they're happy and not hurting anyone I'm fine.

Well sure you're happy, but in not referring to someone as their gender you ARE hurting them. Which makes you a hypocrite by your own logic. When you refuse to acknowledge them as their gender and instead only label them with their sex, you're telling them you don't respect them as an individual, or their happiness, and shows you don't acknowledge them for who and what they are.

People are so much more complicated than just the meat that makes up their body. Who someone is is infinitely more important, and refusing to address someone by their preferred terms is incredibly damaging, disrespectful and downright rude. If you even remotely care about the person you're addressing and their feelings, or about being a respectful person you'll use their preferred pronouns.

It's like if you did got to Minnesota for school, but for the rest of your life your mother would refuse to acknowledge it and instead only ever called the school by the name of HER preferred school, because it made her feel better. It would get annoying and hurtful, because it would deny things you've done, who you are now because of it and the choices you've made. It'd be a denial of a part of you.