I'm not surprised. The campaign of eradicating polytheism from Western culture and thought basically already succeeded several hundred years before you or I were even born. When you are a polytheist, you definitely notice it. People still using "polytheist" and "pagan" as a snarl word or pejorative is one such example. Then there's also things like this that sadly is not uncommon (and all too often don't get treated as the hate crimes they are): http://wildhunt.org/2017/03/pagan-shop-owner-feels-targeted-ignored-in-canada.html
In most respects, that's a poor way of framing it. Polytheistic religions are not concerned with "the truth" because they're not exclusivist "my way or the highway" traditions. Apologetics aren't really a thing for us either. But when you said there's no intellectual or rational foundation for polytheistic thought, or that it can't be arrived at through argument (aka, logical reasoning), that's just not accurate.
If you want to see examples, read upstream in the thread. I'm pretty sure I posted some of it already. The book by Greer in particular that I point to goes into much more detail on what you are asking for. There are also a few newer ones that get into it, I think, but I haven't gotten to reading them. Plus, there are a whole host of Pagans/Polytheists who write their thoughts on their personal blogs that elaborate on this stuff too, but I'd have to spend a bit of time digging some up for you. That'd take a lot of time and effort on my part, though, as I don't have a good blog roll put together for this stuff.
To present the really simple reasoning I use, though, polytheism just makes sense to me because it better reflects how I (arguably, how all humans) experience reality. We know that the sun is not the moon, the moon is not time, and that time is not love. For polytheists, these things are the gods. The gods are many because reality is composed of many different things, which to a polytheist are understood as deities or objects of worship. In practice, it means you worship a deity associated with invention and innovation differently than you'd worship a deity associated with forests and plants. Relationships with gods end up being a lot like relationships with humans in that respect - you treat them as distinct individuals and honor them according to those differences. You also get to pick and choose your relationships. My brain can't fathom monotheism in no small part because I can't imagine worshiping only one thing. I could no sooner read one book for the rest of my life!
I never said anything about practical issues such as social discrimination so I am unsure why you felt inclined to devote most of your post replying to an issue I haven't raised.
What goes for the intellectual circles, I doubt discrimination has anything to do with polytheism not being payed much attention. If anything, I'd say it's your own confession that polytheism seems uninterested in truth which isn't really true considering how I'm talking about monotheism and polytheism as ontological commitments which is to say they all posit an existence of a certain number of entities which an atheist rejects and are as such making truth claims (which is also the way a lot of other people here understood the topic hence them bringing up philosophical issues such as the problem of evil which is an alleged threat to monotheism but not polytheism and to who I responded with my post).
Having said that, my claim still stands seeing how you haven't provided a way to reach polytheism comparable to that of natural theology, instead simply asserting that it matches up to how you experience reality. This, however, is not a sensible objection.
What is truth polytheism? Do you mean truth in polytheism? Do you have proof for truth in monotheism? I am a strong atheist, but my world consists of a majority of polytheists (Hinduism). If you are going to believe in something unproven, then polytheism is as good as monotheism; or even better; because polytheists do not say 'my way is the only way'.
Typo, now edited into "truth of polytheism". My arguments in favor of monotheism are those of natural theology, as I already said. I feel disinclined to share them here, however, since I am much more interested in whether a similar thing can be done for polytheism which I am convinced hasn't been done yet.
Also, polytheism isn't necessarily universal and certainly not non-exclusivistic. Regardless, whether one claims exclusivity to truth or not doesn't have any impact on whether they are in fact right. After all, an atheist such as yourself is in an overwhelming minority when it comes to beliefs in deities yet you consider the overwhelming majority of people to be wrong and you right. This, ofcourse, doesn't have any impact on the truth of your position.