I think it's not just personal satisfaction though. Maybe it has something to do with the culture, but personally I believe if you have that ability, why not try your best to repay and bring more happiness to your country? Clubs pay the wages, but does wages alone mean that players have to sacrifice everything for the clubs, when the clubs sometimes give me a feeling that they treat players as nothing more than robots? And do all the players ask for that much money in the first place? This, the whole putting club before country regardless of the situation, is one of the many things in football which goes wrong.