So I will try and elaborate a little before getting to the plain answer, as I wrote on another thread men like to penetrate, but aren't particulaly erotic, I must be weird since I have always been very erotic. But even in my case I've had to evolve that part of me like you develop every skill you're naturally bound to.
The average Man carry two sexual likings penetrating and having a woman around that's it anything else they will have to work for. The erotic component of seeing partial or complete nakedness fades away very quickly.
As for me, the shape of the vagina never turned me on, they are beutiful ornaments, but don't have the power of other zones, like back, arms, etc, they fall a little above the feet on my personal regard wich is low, but of course seeing one live will put me in the mood to penetrate and they are intricate and cool to watch.
The sheer erotic power of the other zones have faded away on me but they are still powerfull turn ons just not something from wich I will get a climax, except the asss for me that part it's almighty in itself.
I like touching/stroking and sucking everything and there, the vagina is king even above the ass but the view is not naturally stimulating I tend to like the sensation but become a little flaccid when eating not so when stroking while doing that the vagina it's only third to the back and buttocks a distant third nonetheless although the texture is unique.
I don't enjoy the erotic fighting/aggressiveness that girls do, but enjoy warm and sweaty body rubbing
Also they don't need several minutes to come either from hand or penetration.
I don't know, while down there I'm just curious the clit is ugly and not as good to touch as the lips and the hole the smell is outlandish but good but it's never a nirvana experience, some minutes of curiosity down there are enough all in all I draow more intrinsic pleasure from sucking abdomen and tits, both of wich are far from my favourite zones
So, getting to the question if for me the vagina is special but weird for the average man is just an ugly letter V.