I could and should do research on the gates foundation. But that wasn't my question. It's why do we assume they are altruistic in their endeavours? (specifical

I could and should do research on the gates foundation. But that wasn't my question. It's why do we assume they are altruistic in their endeavours? (specifically in this case with Nigeria and debt toward Japan, a very, very odd mix of circumstances that don't seem to be allowed to be questioned here)