We all are living beings, animals, plants, insects, humans..etc..there are so many species…reptiles etc..I do not want to go into the science of that…they also live and reproduce and eat their food….then what makes us different than animals…we certainly are different..other than the biological differences like we can walk erect, we can maneuver with our hands etc..we have a very big difference..we got a free will..which is not given to anyone and what we do with that makes us real humans. We can reflect upon things like why do we do this..why are we here…animals/plants cannot..they live by instinct…a meat eater animal knows that he has to eat meat..a vegetarian animal knows that he would eat vegetables..man can decide if he wants to eat meat or vegetables…we can decide and when animals kill they do not have a guilt but if we hurt someone, we have the guilt of doing that..this conscience and awareness set us apart from other species. That is why after passing through journeys of different species, we are born as humans so that we can understand the soul and the spirit and God. We can know what actually is the purpose of life, who we are and what do we have to do. So that we can attain freedom from karma..no one can quit karma even when God was born here he had to do his Karma..so the thing is what type of Karma we have to do and how do we understand…if you will know that you are not doing its only the consciousness which is flowing inside you, so that you can detached from the I..you will understand the real purpose of being here and you will attain freedom…so make use of free will which is given only to humans, stay as humans or else there will be o difference between a human and an animal.