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I understand this is a combinations of a few ending particles, but I've seen it enough times that I wonder what general feeling a native gets from it.
Examples I remember:
I think we use 「～～んだよなぁ」 most often when we:
It sounds as if the speaker is feeling reluctant to admit it. That said, it's not so much the meaning of よ or な/ね themselves as the sentence being prolonged by somewhat easily linkable particles.
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