I think it's debatable how much of that they did to themselves. They may have had an evolutionary leftover of super libido madness coming upon them every 7 years to ensure they sought out a mate and kept the species going, swimming up stream etc.. But the suppression of all libido outside of that may well be a product of Surak's teachings. They suppress being pissy because they are afraid to get too angry, they suppress libido because they are afraid to get too sex obsessed. Pon farr is probably exacerbated by there being no outlet in the non-pon farr years.