Well Hannibal (by Bryan Fuller) did a pretty good job minimizing romance in my opinion. There are just a few sex scenes really (even a queer one xD) and it focuses on the gory stuff, mental health and the relationship between the main characters No boring falling-in-love-scenes and lovey-dovey stuff~
Other than that I had a really hard time coming up with more shows and movies but I guess another one would be Life of Pi (I personally didn't enjoy that one) and "Spy" with Melissa McCarthy which is an enjoyable comedy movie, even though it started with her having a crush, they didn't focus on that at all later on
As for why they always include romance in movies, I agree with the others above
What annoys me is that often times it doesn't even fit in. I can only think of "The Hobbit" where they forced that romance between Kili and Tauriel in the movie. The screen time for that (in my eyes) unnecessary romance, could have been used for the other dwarves, who actually played a rather important role but whatever. I could keep ranting about that. Still salty