>>39225619>fucking their kidsIncest being taboo is stricly a social construct that has it's roots in agriculture where the marriage between different familiea merged the riches and ownership between two families and incest, burning a bridge between two families, was heavily penalized. Connotations of abuse and rape associatied with parent-child incest are completely different subjects.
>using people as living baitUsually criminals and slaves were punished by this, it was hardly a common practice and... Hey, it worked.
>burining people on the stakesIt is by now heavily romanticized and back then they actually conducted trials unless some form of corruption was involved. On the latter it is more a subject of corrupt government abusing death penalty as means of control.
>all the fucked up medical thingsMedicine is a field where empirical science, literal trial and error, had a lot of clinical value until the modern years. There were not such things as X rays, CT scans, biochemical studies etc. 100 years ago, let alone further back. Ultimately all those "fucked up things" you claim laid the groundwork of modern medicine.
It's easy to view the past as barbaric when you use modern culture as standard for judgement, but ancient humanity is hardly as irrational as movies or novels would have you belive.