I can't speak clearly to what I love about "women", but I can speak about what I love about my wife.
I love her way of looking at the world. Her Pollyanna-esque belief that things will turn out all right, that people are better than (in my opinion) they are is infectious.
I love her kindness and her heart. I love the way she treats small children, animals, and people that are mentally challenged.
I love how readily she smiles. I especially love her big goofy toothy grin.
Speaking of goofy - I love it that she IS goofy. I love her twisted sense of humor. I love how I can say something totally messed up to the cat in a sweet tone of voice (a habit I have) and she runs with it, expanding on the notion and laughing with me.
I love that her hair went grey when she was young, and she never bothered to dye it. It's completely white now, and I love that she's comfortable enough with herself that having all-white hair through her 30's and 40's doesn't bug her.
I love that she trusts me enough that when I tell her's beautiful, she takes me at face value and doesn't call me a liar by saying "No I'm not." and when I pinch her tush, she wiggles it at me and grins at me over her shoulder.
I love waking up next to my dream girl. I love that I want no other woman, ever.
I love her sense of adventure and willingness to try new things - given my stance on fitness and resource consumption, coupled with her desire to be more fit, she's begun riding her bicycle with me everywhere, and doing errands on them too, including laundry and grocery shopping... she's even begun to ride her bike to work a few days a week, a 12 mile round trip.
I love her sex drive and lack of inhibition.
I love her face. I love her body. I love that she's at least as intelligent as I am.
I just... love her.
I can't speak to what I love about "women", because most of the things that spring to mind are stereotypes that are not necessarily true for most women.