If I were to say "Islam is the greatest religion because it is the only religion that makes sense"
That makes sense to me, on the basis that it's an opinion. I am of the same opinion about my religion.
... and we know that whatever I say afterwords is probably aimed at convincing someone to Join my faith.
Is it? I'm not here to proselytise. I argue only to show my faith is reasonable, rational and logical,
if one accepts its axioms. If you don't, then there's no point in discussion at all. I never thought you were out to convert me in our discussions, but only to demonstrate where Islam 'makes sense' to you and, like myself, to correct others when they hold and indeed promote misunderstanding regarding our respective doctrines.
I engage with other traditions to understand, not convert.
For example, I find certain aspects of Buddhism, as generally promoted, to be illogical, but then I'm pretty sure that's because what's being said doesn't actually reflect orthodox doctrine, or I've got an incomplete grasp of what's being said.
An acceptable response would be anyone saying "I don't agree, as my religion makes sense to me" maybe followed up with questions about the other's views.
Ah, that would be interfaith, but that's rare here. Usually what's put forward is, "I don't agree, as my religion makes sense to me," and then the other religion is disparaged. There's some classic examples of that here.
If you've read my posts on reincarnation, that's all I've ever done, but no-one seems to get that. Senthil, at least, answered the question for me without getting into complex theological/metaphysical discussion, and I have no problem with that.
Where I discussed reincarnation within the Christian Tradition at some length, putting forward grounds for dialogue, there was none. I was trying to show where orthodox Tibetan Buddhist and Roman Catholic ideas might coincide, but it never really got beyond individual opinions of what people thought reincarnation is all about, with precious little reference to any doctrine at all.
I think the dispute between non-traditional syncretic beliefs and the Great Traditions highlights certain problems. It's a dialogue of subjectivity v objectivity. Any syncretic system will always founder on its flawed logic, the idea that Traditions say and indeed are the same is very popular, but I've rarely met anyone who says that and understands doctrine in any depth. It's popular because it's a nice idea, and because it can be used to validate any opinion one likes. Indeed, whereas the Theosophical Association once said 'there is no religion higher than truth', today that has been rewritten to read 'there is no truth higher than my opinion', and I think that applies in a lot of cases. 'My belief is right because I believe it', is another claim, and with that is the assumption, indeed the assertion, no other belief stands on firmer ground. Nonsense of course, but there you go.
Syncretism will always have an uphill struggle against Tradition, because the likes of you and I have some really heavy-hitter thinkers in our corner – it's hard to contend with a Rumi or an Eckhart or a Shankara! In dialogue between Traditions, you have the likes of Aquinas for example, who had the towering intellectual lights of Al-Kindi and Ibn Sina and Ibn Rushd to polish his skills on. The new denominations rely more on popular appeal than philosophical insight.
It seems to me that when faced with an argument that cannot be answered, the easy way out is to accuse the other of attempted conversion, and there is some truth in that. When your own system has been shown to be wanting, then why should you cling to it, for other than sentimental or self-serving reasons?
My way was to go looking for the answers, to test the foundations of doctrine. I think I surprised some when I said I'd drop Christianity without a moment's hesitation if it was shown that Christ was a myth. But then, I believe in a mystical Christ, whereas the popular image is merely a moral Christ. Big difference. There's nothing uniquely Christian in the moral message of Christianity as far as I can see, it's universal, so any mythical figurehead will do, the person is subsidiary and really of little consequence. Like the Jefferson Bible, a cut-n-paste job, until you come up with the image you had in mind in the first place ... I accuse them of cherry-picking, they reply that everyone does, which of course is not true, but they won't have it any other way, because they can't.