>>7287042Marrying someone in this way is completely different. Most people would not marry a person expected to live a short lifespan, and when people get to such a point that they're ideal marriage ends, they've only got any where from a day to 10 years to live left.
A touhou would have fucking forever.
Also, now that I think about there's another problem with going out with a Touhou.
See, as human beings, we tend to find people attractive based on how attractive we look at some point. A really old person, will find other really old and not-quite-so decrypt old people (that is, they look good "for an old person") but the same simply doesn't carry over for young people.
But considering the Touhou, can they really love you for that long? They never age, and your body starts to exhibit traits we associate with disease. Sure they may love you will you're young, and sure they'll try to love you as you get old... but can they? It is not particularly uncommon that someone simply cannot. It's not that they hate you of course, but they just can't be your lover.
Especially considering they would probably end up taking care of you. That's another reason for people to break up with someone they really love.