>>11094207Twins and triplets have lower IQs on average because womb resources are divided. Oh boy! Real smart getting fertilization treatment to produce inferior off-spring!
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1298831/If you have twins, the only moral decision is to abort them and try again. Do you know how rare it is in nature among land mammals to have small womb sizes? It is a preference of quality quantity, something that does not happen too often. Imagine throwing all of that advantage away because "MUH TWINS". "MUH IFV". If you ever met twins, you'll notice, in addition to them both being slow on average, one usually gets the short end of the stick. This is the one that less oxygen and food went to, and was fetally malnorished.
Look at a list of great scientists and philsophers. You wont find a single man born of a twin birth on it.