My opinion about the film Blade Runner

I don´t understand this film so much, but it´s a future film that shows the following years in the Earth where there are replicants. A man called Deckard was a policeman that is going to kill all the replicants, but they have hidden. I don´t sure but I think he loves than one replicant who finished died like the athers replicants. In the middle of this exciting film Deckard should kill a replicant that wants live more time. Finally the policeman win and kill the replicant . It´sa film very fantastic and interesting that shows the future Earth.