I don't know, I like my vagina but have often wished I was born male, just for how much easier life would be. This is biased of course.
On the other hand, I've never ever been mad or jealous of other people who wanted to change their gender or be themselves sexually (lbgtq+). Isn't none of my business and people should have the right to do with their genitals as they please. It's a basic human right, just like abortion.
We should disconnect our bodies from any labels is my point. That way, no government or religion can have an influence on it. The 'My body, my choice' is still the right way to go.
Of course that would be nice, but I feel we are a long long way culturally as a species from disconnecting from the gender binary as a whole. I think so strongly of myself as male, and it seems for many queer people that they think of themselves as transgender within that binary. It's important while we still think this way to vehemently preserve the right to indentify legally in or outside of the gender binary but I totally appreciate that idea as a long term goal.
Religion shouldn't have an influence on it. Ideally, governments should have an influence on it, but our governments are in a lot of cases ruled by religious idiots.
My language is not gendered, so yes, writers do have to work harder when they want to imply gender without explicitly mentioning the gender in their writing. But it also makes concealing a character's gender easier to make it harder to guess the plot.