It's the chore.

Matthieu's brain scan shows that compassion is not a chore.

Because if compassion was a chore, nobody's going to do it, except maybe the Dalai Lama or something.

Tom Sawyer pulled off that business strategy when he persuaded his friends to pay him for the privilege of taking over his hated chore, painting the picket fence. But most scientific research subjects either receive compensation or contribute their time free of charge they do not pay to participate.

I can't tell you how to find a chore loving person of the approximately ideal size and attractiveness who prefers horror movies and doesn't have a lot of friends hovering on the brink of divorce, but I can only encourage you to try, because the benefits, as I've pointed out, are significant.