My main point about films is that I don't like the adaptation process, and I particularly don't like the modern way of comic book-film adaptations, where, essentially, the central characters are just franchises that can be worked endlessly to no apparent point.
I can't complain that I've had a public all through my writing life, but people don't quite know what I've written. People don't read you too closely. Perhaps, after I've died, they'll look at my stuff, and read it through, and find there's more in it. That may be wrong, but that's what I comfort myself with.