Comment by t-3

Wealth imbalances are bad largely because many assets have upper limits on available quantity, ie. the amount of land in most countries is relatively stable. If those assets are hoarded by a relatively small number of people, it's much harder for less wealthy people to become more wealthy. Our entire socioeconomic system is based on the premise that one can work hard and change their lot, so making sure that's actually possible is important for societal stability even if you don't have any religous/moral/ethical qualms about hoarding wealth.