Why Future People Might Not Matter Morally

If future people are allowed to marry present people, what's next? A toaster from the past, marrying an iguana from an alternate reality, it'll never end. They'll know the exact time and matter of your death, which is the perfect combination of smugness and creepiness. I mean, you're sitting there eating a ham sandwich and they're thinking, that's right. Go ahead and contribute to the heart attack that'll kill you in November 4th, 2045."