I feel like creating a list of utilitarian paradoxes. Did I miss any?

- Investing money increases the amount that you can donate. It seems that it's always a good idea to invest longer, but it's obviously a bad idea to invest forever.
- Pascal's argument: We must strive exclusively for infinite utility, as an chance of it will outweigh finite utility.
- Undefined total utility: If both infinite positive and infinite negative utility happen, the total utility is undefined.
- Undefined expected utility: If there is a possibility of both infinite positive and infinite negative utility, the expected utility is undefined. Also, if only finite utility is possible, but the probabilities don't decrease fast enough, expected utility is still undefined.
- Incomparable universes: If we take two possible universes that are different enough, it can be seemingly impossible to find a way to compare the two. For example, sentience being analog vs. binary.