> I think it really makes sense to consider ourselves to be just intelligent cattle

That's too misanthropic for my tastes.

> to turn natural resources into machinery, weapon, insights and other stuffs they need

It's easy to live in our world and ignore the maintenance staff.

> but once AI and robots keep up

This is nowhere near happening. Your seeming rush into anticipatory compliance is exceedingly premature.

> they can probably get rid of 90% of us.

It's the same moronic death cult that's been active since the 1860s. They would like to believe this, more importantly they would like /you/ to believe this, but a sober examination of the facts shows it to be a mixture of bluster and folly designed to intimidate you into transferring your personal wealth into their profit.