My decision is based more on a combination of having found happiness in my life and the realization that I can live with a certain degree of gender dysphoria. There are always tradeoffs to every reality and I have pondered my situation at great length. It is true that my ability to present and pass as a woman has played a significant hand in my decision.
No one knows what causes dysphoria and each of us must grapple with what to do about it. If you are young and understand yourself well enough, transition could be a wonderful option which will set your life on a new path and permit you to respect your personal sense of identity.
Not all people who transition resolve their gender issues entirely because what they might have imagined in their mind’s eye may not be attained. You may expect to pass perfectly or resolve your body dysphoria only to realize that, even with a series of judicious medical procedures, what you wished for becomes unattainable.
Here is where I think reality must dose us with its freezing-cold water. Before embarking on any changes there must be a keen sense of self and a confidence borne out of self-love; not in the narcissistic way but in a way that respects your uniqueness and welcomes it unconditionally. You must resolve to run your life using your personal compass and disregard what one is supposed to do. This is independent of what your body looks like.
Sex and gender are deeply complex subjects that have been simplified by a society hell bent on fashioning convenient static binary models. It was a way to control the uncomfortable reality that these behave much more like spectrums and we all know that once you impose something, the human tendency to conform to peer pressure becomes irresistible.
That pressure must be removed, and a personal reality created that allows you to fit into it with comfort and grace. Then and only then, can you make an informed decision.