...but that happens all the time, Captain. [Vastra says this very matter-of-factly, not intending to be cruel and wanting to offer him some comfort.] 'Supposed to' suggests that each of us has a destiny or fate, and those of us who do not follow that set path are somehow deviating from that. But that is the beauty of the universe and time-- it isn't a set, defined thing and is always capable of change based on the individual. You will write your own story, and no doubt it will be just as daring and exciting as any of your other iterations.