It's NOT rational. It's psychotic viciousness to the Nth degree.
See: "...in the much more virulent cases of hatred, masked as envy ... the creature ... does not desire the value: it desires the value's destruction." and "They do not want to own your fortune, they want you to lose it; they do not want to succeed, they want you to fail; they do not want to live, they want you to die; they desire nothing, they hate existence ..." (Atlas Shrugged.)
from "THE AGE OF ENVY" by Ayn Rand HERE
Thanks for the ping. Great quote from AS! I loved that book.