Why Human Being Is So Helpless

Feeling all the time one thing that why human being is so helpless at any stage of his life.Either its his day of birth when he/she is waiting for someone help to pick them up and feed them or either its day of death.Why life become so complicated after entering in 18(Age).After entering in 18 we are still dependant on others.why is it so?
If it is so then why we are here in this world...? Helpless word is very terrible for those who are disalbe.They always need someone who can take care of them.Again there is one thing which is redundant(Helpless).Why we always depned others...?Why we cant see the whole image of this world in one sight..?We always need love to live life, if we need love to live then what about those who doesn't have their parents or their own one's.How much this word is critical, complicated and mystreious....?The word i am going to use is life.What i perceive is all that, everything is interrelated with each other.Life is related to us ,and we are related to our parents and our parents are related to their parents and the life cycle goes on, what i am trying to say is all that all of us need help of others as we can cope the life.If we need help of someone that's mean we are helpless.