system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Why is everyone working at the TVA Human?

The TVA recruits from the variants they extract from the timeline.. 

They are active on earth and in Asgard so they are probably involved on everything. 

Why are human variants the only ones being offered to work for them?
gpt
Because He Who Remains is only concerned with events that affect his personal history. Until about the last couple of decades, the only aliens that had significant contact with humanity included Eternals and Asgardians, neither of whom are externally distinguishable from humans and at least one of whom are very few in number. This means the vast majority of history that could actually result in a Kang variant only involved humans or aliens that look just like humans.