Hey Listen! Because we are HUMAN! we have the ability to think, decide,... . this is the only thing which makes us different with the other creatures! ability of thinking, ability of deciding!
another reason is that, we are not here in this damn world, to enjoy our BODY! we have spend our time on another things such as enjoying nature, learning, understanding, thinking!
and I appreciate you because you have thought on this matter, this pcychologically means that you still are ration and yourself know that this is not true! I dont have enough time on answering you about another side of this question which is its impact on social issues! if you liked my answer, I'll tell you more here:
[email protected]
Be Happy,(not in a stupid way)
;-)