Except science shows that it is a physical condition. Trangenders have both different gene sequences in the NR3C4 and CYP17, and different brain structure in the Stria terminalis
For transgenders it's not all that cut and dry. Behavior can change the brain due to its neuroplasticity. Learning creates new neural pathways, so what you wrote about could be an effect and not necessarily a cause. As the old dictum says, "correlation does not necessarily imply causation."
