1 is it being a saint or being a killer?

a cute 5 year old boy was pulling the end of his mother's cloth his smile outshining the sun's brightness beaming in full glory but the woman was not responding to his smile her face pale and expressionless as if she has seen a ghost ,her face twisted seeing the boy's smile .The boy seeing this became quite sad he dragged her to the nearby national library, he loves to read books and learning something new everday is what he wishes to do all his life . He takes out one of his favourite book reading it his eyes shine like diamond seeing this his mother is all smiles but deep within sheis tensed and worried .The surrounding people are happy seeing seeing the cute little boy. The boy comes everday and reads a variety of books he is very social and is very kind hearted but alas!! god never give happiness to good people. He was born with a rare disease called "ghkp diseases" which is incurable ,this disease gives the contracter a very high iq and intelligence but snatch one's lifeline in exchange ,the person who contracts ghkp disease will not live beyond 10 years the little boy is the first one to contract this disease in the entire world and surviving this disease is impossible the percentage of surviving is less than 0.1% .The mother is all tears thinking is the god being a saint or a killer? to her child