Well, never. It's like asking who has ever come across a mathematical point. The ideal is an idea we always have in mind, and towards which we strive. It's what humanizes us, and makes us ask what the Good Life might be....I guess it now goes by the name of self-improvement.
Any man worthy of the title [rational and self-determined] will examine himself, and then look to better himself by striving towards the ideal. I think most budding Don Juans would agree with this. The disagreement seems to come in our differing views of the ideal....yes, there is always an ideal/idea at work, however 'realistically' it is framed.
I don't think talk of the ideal involves 'pedestalizing' some particular women, but rather involves asking what an ideal relationship might be. And then whether some particular woman could fit into that.
If the "ideal" relationship you have in your head is not rooted in REALITY then you are setting yourself up to be disappointed.