Is Persian one of the most poetic languages (and cultures)?

One thing that I can't stop to think about every time I talk to my Persian relatives (Persian-speaking Iranians, that is), is how incredibly poetic the language is, and how people manage to almost build a poem out of a trivial conversation. It's full of metaphors, and even a crazy insult "khak bar saret" speaks a thousand images. Is this exclusive to Persian or are there other comparable languages with this poetic connotation to it? I've personally visited a vast number of cultures and haven't really found something comparable to this extent. Is it all due to the country's past and present, with perhaps the most famous influences being Hafez, Rumi, Ferdowsi, Saadi, Khayyam and others?