Whatever your favorite genre is, you can probably trace your love for it back to one single book that really moved you.
There are no requirements when you're using a particular genre. It's not like the genre is your boss and you have to do what it says. You can make use of the genre any way you want to, as long as you can make it work.
When you're doing a comedy and you want to somehow satirise people who are taking themselves seriously, I think the most serious genre is the thing you're going to get the most out of. If you're trying to satirise a comedy, it's hard to do that - it doesn't really work as well. But I love the war movie genre and I'm a fan of all those movies that are part of what this movie is.
The horror genre is fun but I'm not sure it is quite right for me.
No, the horror genre is not my first love. I don't run to the theater to see horror films.
One of the problems of this genre is that there are cliches everywhere, and you've got to be careful and watch out. Our rule with cliches is to either gently acknowledge them and make fun of them, or do something else. Milady is, in one sense, a villain because she does bad things.