Hedonism

Here is an argument:

1. A character trait aimed at producing what is always intrinsically good is not a vice. (Premise)
2. A tendency to Schadenfreude is a character trait aimed at producing pleasure (at the sufferings of others). (Premise)
3. A tendency to Schadenfreude is a vice. (Premise)
4. Therefore, pleasure is not always intrinsically good.