One consideration may be that it helps you “factor out” the whole charity issue from your daily life. You can buy an iPhone without feeling guilty about not donating the money to charity if you’ve precommitted to posthumous donation. You’ll just never have to think of it again, it’ll take care “of itself”. It may work for some.
Ah. Free fuzzies. In that case, requesting comments on it is status signalling among other things.
Ah. Free fuzzies. In that case, requesting comments on it is status signalling among other things.