I'm going to skip on the "around the world" parts of the discussion -- I simply don't have enough information to speak for anything other than western culture. Do I think we live in a "rape culture"? No. Do I think that there are small subsets of the population that participate in a culture of sexual assault, including rape? Yes. But to compare it to another flame-worthy topic, it's similar in scope (if not in magnitude - it is much more prevalent) to mass shootings. Does it happen? Obviously. Is it horrible? Yes. Should it be a goal for society to minimize it as much as possible? Yes. Is it a fundamental characteristic of our culture as a whole? In my experience, no.
I'm having a hard time putting the rest of my thoughts on the issue into words, so I think I'll just stop there for now.