It isn't like they couldn't survive without her contribution to their family income.
YouTube's contribution to world peace is not simply to add empathy to current events, although that would be enough.
Actually, she wasn't that interested in making a business out of it, but she felt the need to make some monetary contribution to their marriage.
The tithe had been replaced by an export tax on exported agricultural produce levied at the custom-houses, and the smaller peasant proprietors and shepherds of the mountainous districts were practically exempt from any contribution to the state.
Its interest lies, not in its doctrines, which have often been absurdly over-estimated (particularly among Christians), but in its contribution to the study of human thought.