It is the Song of Solomon that is suggestively erotic not Psalms. Of course God created love and sex so they are not bad but I believe they were meant to be private between a man and a woman.  I agree her writing is not half bad...not my kind of reading but just because God gave us sex doesn't mean that video porn or written porn is what we as believers should be wasting our time on, in my humble opinion.  Remember satan takes what is good from God and subverts it with the goal to use it to destroy us.  Sex is nothing without love but we are led to believe all sex is okay because "God gave it".  Just another lie from "the father of lies".