I dont understand the end of the film "the strangers" can someone explain it briefly?

Question

can someone just explain wot it means at the end, from the point where the 3 strangers walk into the house and stab the man and woman? from that point onwards.

Answer 1

Before they stab the man and woman, they ask "the strangers" why they are doing this to them. They simply say "because they were home." It kind of just shows like how sick minded the three people were. After they kill them (well the girl lives) they just leave as if nothing had happened. While driving down the street, they come across two boys that are passing out fliers from their Christian school and one of them asks one of the killers if she is a sinner.....she simply replies, "Sometimes" (Referring to what they just did) and he gives her the flier. Then they just drive off. The boys keep walking then notice the house and go in and see that people have been killed. One of them goes over to the woman and then she screams (scared the poo out of me lol) So in the end, she lived to tell the story because if she hadn't, they probably wouldn't have made the movie cuz it was based on a true story. I thought it was just creepy and like, "Man, how can people be so sick..."  

Answer 2

I saw this a while ago so I really don't remember everything but the movie was a little weird at the end. And when the woman asked, "Why are you doing this?" One of the girls with the masks said, "Because you were home." I don't think they had a real reason to be killing them, I think they just did it because they liked killing. And when one of the killers asked one of the boys for a christian living packet...well not really sure about that maybe she feels bad but will do it anyway. Oh and I remember them saying, "Next time it will be easier." So...I guess they do that to a lot of people. It's also supposed to be based on the Manson Family Murders so look that up if you want to know more.