Many children claim that it'd be cool to be a bird. everybody wants to fly high. but they forget that a bird must fend for itself, hunt its food and fight to mate.
children also say that they want to live forever and always stay relevant as the world changes.
what would it be like if you were a plastic bag? you could fly with a bit of help from a little gust of wind. you wouldn't have to worry about food or reproduction because you wouldn't decompose for at least 500 years, during which you would indeed remain relevant.