To procreate and evolve
Reason for this?
Life is a race
Which planet is the fastest and evolution?
A previous Earth was one of the winners in a previous race
Therefore Earth is late to start evolving
A Theory By Me, A Person Who Has Basic Knowledge Of Space, AKA TheMagnificentPen (I have yet to make a user)
Also it's answer, not awnser. (I like grammar and correct spelling >w<)