The purpose of life is to connect. 

Advanced Beings Will Offer Humans the Following: 

In exchange for the cessation of the use of any and all animals for food, medical, and consumer production and research, they will give us an unlimited food source and medical advancement, including 3x our current lifespan.

In exchange for the cessation of all nuclear, dirty, and fossil fuels, and the destruction of all nuclear, chemical, and biological weapons, they will give us unlimited clean energy (fusion)

In exchange for a unified world government and a new organized consciousness with a fundamental belief that "the purpose of life is to connect," they will give scientific advancements including interstellar and inter-dimensional travel.