reproduction  has very important role to maintain , to support ,  to fulfill , o accelerate the process of life on the earth when plant stop reproduction so how does animals and insects get their food and how does humans get this without the production of crops and animals all are reproduce by the process of reproduction all species wants their offspring to come here and take the relish of the life and to support the eco system of this world . no reproduction =  no life  = no one =  the end , so nothing is left behind thats why we had to support our species to go long and to make new generation , a new period of life and  and to maintain the beautiful eco system . 
in short without reproduction there will be no life thus noone surviving