[Fyron]

Because there is absolutely no incentive not to take all of them. You lose nothing by selecting all traits. You have more strategic options available, as Ekolis said. You obscure any traits you have at the end of the list due to only showing 2 and a half rows of traits. It is not absurd at all when there is no possible bad effect from taking all of the 0 point racial tech traits. So what if you might not ever research most of the techs they allow? You don't research many of the techs in the tech tree anyways. The question you should be asking is: why would someone not take all of them?