Have you ever noticed that wealthy people often leave money to charity in their wills? It would make sense from a utility standpoint to donate while alive because you can be more involved in the use of your money and ultimately gain the appreciation/satisfaction/utils from the result. You gain no utils when dead and I'm assuming that the prospect of future utility is less valuable than the act of donation in the present.

You don't get fuzzies, but you do get utils. Utils are not about how you feel, but about what happens in reality. You don't need to know that a good thing happened, you don't need to be there, you don't even need to have ever existed in order for something to be right.