I will repeat what I posted 2 mins ago
The reason war donations is because it is very exploitable for both the FiN achievement and XP. XP does make a difference when you start looking for clans.
Also, people need to get it into their thick skulls that WAR IS NOT MEANT FOR PROFIT. Sure, you make a healthy amount of gold and potentially DE, but most successful war clans, EVERY member makes a loss. Clan wars are about offsetting the balance of lots of elixir against a lack of gold. The point is, war CC donations are in the best interests of the clan, and it's up to you whether you're willing to donate for the good of the clan.
If the only reason you won't donate to war cc's is because you don't get XP, well...let's say you won't be in our clan for war. We are a clan of 35, and we organise efficiently so that the cost is spread over as many people as possible. Do they look for credit? No. They just get on with it.