Not defending the perpetrators but the increasing trend it's just because women are looking for the wrong things in a man.
Height, "good looks", nice job titles, flashy pictures of travels or cars, the promise of free drinks and dinner. There you go!
If women paid attention to the really important things, making sure that they are in a public place first, etc, this wouldn't happen.
And what are they expecting to happen when they go on basically a BLIND date and accept to go to the guy's place? Stupidity! SMH