The economy is a balanced thing, too much money in the game, and your money becomes worthless. There has to be a balance, for every dollar in, there has to be a dollar leaving too.

One of the biggest ways to get money out of the game is through death, so if you killed someone but got to keep their money, then we would have to find other ways to remove the money - the easiest way is to severely lower your income, or jack prices up.  This means that the only way to really keep up financially is to continually wack - so those don't wack are at a severe disadvantage.

It is only because of death causing loss of money are we able to give you so much through activities such as drug deals, petties, felonies, achievements, and so on.