Sex is a healthy normal part of being human. So are fantasy and imagination. I'm an adult writing for other adults. My job does not expose me to diseases or drugs. I do not force my work on other people and if they seek it out and don't like it, they are free to post an unfavorable review with an expression of their opinion.
So what's the big deal?
It's been suggested in the argument against porn, that porn creates an unrealistic and unattainable image of what sex really is or should be (again, just stating how some feel, not offering my own opinion). This thinking has been transferred to erotica, with the implication that reading erotic stories creates in women the same false image. If that's true, why stop there? Let's ban all romance writing and certainly in film we must do away with romantic comedies. We don't want people pining for the storybook ending that will never happen. We might as well take away anything that glorifies anything. The underdog team that wins the championship, the lone crusader for justice who defeats the bad guys.
This thinking becomes so muddled and illogical that I get to a point where I can't even take the naysayers seriously. I might be able to understand an argument against words on a page if those words promote hatred or bigotry. But when it comes to erotica, the goal is pleasure. A healthy and happy person can also be a sexual and imaginative one. There's nothing wrong with that.
Don't take away Grandma's erotica, it helps her sleep.