Some transition in their sixties or seventies and that has the same validity to me as someone who does it in their twenties. Both groups may have felt the same inside but one had the method, circumstance or courage to make it happen. And that assuming you see transition as the ultimate goal. Because the way I see it the ultimate goal needs to be coming to terms with the disphoria and finding a balance you can live with. That in itself is a big challenge.
We in the trans community should be mindful of each other's circumstances and respect each other's choices. Only we know why we have made them and what makes them work for each of us.
It took me years to learn to be a man and I imagine it will take a few to learn to be a woman (if that is indeed where I end up). Regardless all the work of trying to become a good and whole human being will have not been for naught. I would like to think that counts for more in this world.