If QI is true having kids would be the ultimate crime. If QI is true the only ethical course of action would be to pour all humanity's resources into developing an ASI and program it to sterilize the universe. That won't end the nightmare, there'll always be universes where we fail to build such an ASI, but at least it will reduce the measure of suffering.

This is something I've thought about too, although I've been a bit reluctant to write about it publicly. But on the other hand QI seems quite likely to be true, so I guess we should make up our minds about it.