What about other beings/races who see Earth as place of biological resources?

I'm reading a (free) book 'Life In The Universe' http://www.newmessage.org/nmfg/Life_in_the_Universe_by_Marshall_Vian_Su…
(and already read 'Allies Of Humanity') and it seems to correlate with my own nightly experiences with 'visitors' that are not very pleasant to say the least.

Even if we make it through the changes on Earth alive, then still we most likely have to keep dealing with unwanted visitations. I really don't think it's as 'easy' as just to deal with Karma, evolve and that's that?