The same reason anyone would be: because their current body doesn’t match their gender identity and they want to change that. This person just happened to start inside the same arbitrary social category as their destination.
The word cisgender (often shortened to cis; sometimes cissexual) describes a person whose gender identity corresponds to their sex assigned at birth, i.e., someone who is not transgender.
If they’re taking hrt it sounds like they’d want to change their gender
The same reason anyone would be: because their current body doesn’t match their gender identity and they want to change that. This person just happened to start inside the same arbitrary social category as their destination.
I’m confused
If they’re taking hrt it sounds like they’d want to change their gender