I own a lot of films. You can't imagine. If I would count the VHS, the Betamax tapes and the VCD's in my basement I probably own close to 7000 titles, around 6000 of them on blu-ray and DVD. So I've seen a lot of stuff, from the best to the worst. And already there we have a problem. In my philosophy basically every film that's been made serve it's own purpose. I just refuse to compare, for example, Darren Aronovsky's Mother! with Fred Olen Ray's Hollywood Chainsaw Hookers or Dario Argento's Suspiria with Sorority House Massacre II, because I think all of them are worth watching on their own merits.
A film doesn't have to change your world. Far from it. It might just be there for the evening, for ninety minutes of entertainment and then be forgotten until next time it shows up late on cable or deep down in one of those boxes with x-rental DVDs for a buck ninety-nine. Or... it will shake you to the fucking ground, making you question everything and everyone around you, because the impact on you will change your life.
Both categories has a value, for the moment or for life.
When I was younger I worked as a projectionist at a cinema for art house films, which was great fun. But I noticed that many of my co-workers had deep, deep problem separating pretentious shit from honest cinema. Because if you only watch so-called quality film you stop being able to separate good from bad. Soon all these films, made by obscure directors with obscure names, becomes equally good. They loose sense of quality within quality, if you all understand what I mean. If filmmakers only made amazing, incredible, life-changing films it would be impossible enjoy them. The tiniest fault in a one of those movies would sooner or later mark that movie as a pariah.
BUT if you toss in some good old Hollywood mainstream, or Japanese monster movies, or Italian exploitation, or Soviet science fiction, it will balance your sense of entertainment value. There's no shame in loving what other people call trash. How can they have the right to step on a movie you love, just because it might not have the same artistic sensibilities as their favorite Hungarian farmer-drama?
I speak ill of no movie, I try to find something worth watch in every production out there. The biggest enemy to quality is boredom. If a movie bores me it's crap, if it entertainments in on some level - and that can be something deep, something profound, it's a good or even great piece of art.
If you look at entertainment with morality in your eyes you will live a very boring time here on earth, but if you open them and embrace the purpose of that little DTV film or that huge motherfucking Hollywood movie or that black and white art house drama, then you will live a better and more fulfilled existence. As my new acquaintance here on Ello, @Ellinor_Kall wrote, morality is just opinion.
So remember, there's no guilty pleasures, just pleasures.