Question for the providers.  I know that women are different..some love to have their nipples sucked, bit, squeezed.  But other women have very sensitive nipples and dont like the attention.  Since, I would wager, every hobbiest is interested in this area..how do you deal with it if you have sensitive nipples?
I am never that sure.  I have had some girls really want me to bite hard..and I am hesitant..and then they take their nipples in there own hands and seem to wrench them, twist them etc.  

I have very, very sensitive nipples, but once I get turned on, the sensitivity changes to touching my nipples turns me on even more. I will direct my gentleman's attention to other areas, till I get all hot and bothered! Then I love nice gentle licks or sucking on my nipples, nothing hard or rough for me.

NIPPLEODEON !!

Hey, what about me. I like it too. Tweak them, lick them, bite them, pinch them. Just don't stop, don't stop. In my younger days I could almost cum that way.

Which would the guys prefer, big nipples on small breasts or small nipples on large breasts?

I'll take the big nipples any day.

I have large, natural breasts with huge nipples.

I love to see the guys expression when I take my bra off.

A big part of my sessions are spent on my tits & nips.

Guys love to rub my breasts all over their faces, bury their noses between them and inhale my skin.

And they moan loud and get voracious when my nipples start to grown in their mouths.

It turns me on a LOT to watch them sucking on me.

Like Lisa said above, it turns the pussy faucet on, I start to drip, and drip, and drip.

mmmmmmmmm

BDG

I like small nipples on any sized breasts, so long as they are natural.  That, of course, is my ideal, but I never kicked a lady out of bed for improper nipples.

ribs to knees is the sweet spot on a women front and back   oh i'm sorry i didn't spend any time with your breasts. small"little girl breasts" are my favorite with little nips

but I would be afraid of missing so much more!  I'm such a boob-freak.

Large areoles.  My favorite local lady has areoles the size of my palm.  

Besides doing the obvious stuff with them, I love to watch them and see how they respond during sex.  No surpise, they're usually their largest and most solid during DATY.  It's fun to see them wax and wane during sex.    

However, I'm a nipple connoiseur.  So far I've found something attractive in every nipple, large or small.

Large nipples are my fav.

I have ever seen on a human.  She was an asian gal in her mid 30s and was dancing at a local strip joint!  she had nipples that were about 1.5 inches long.... wow!  they were incredible....  (the rest of her was also great)  my follow on is what is the largest nipple that anyone has seen and 2) what is the largest areola that anyone has seen.... those turn me on!

Most of my lady friends enjoy breast and nipple attention.  One has very sensitive nipples, but loves full breast attention.  I have learned just the right touch to make her happy and not hurt.  However, once she's had an "O" or two she seems to give me more leeway for gentle suckling and tongue flicking. As always, your lady will let you know. As to my esthetic taste, pink is good, brown not so good.  Responsive nips great, but pencil erasers a tad disconcerting, and inverted nips a real challenge.  2 cents.

Responsive is the key. I love the sensation of feeling her nipples get erect while I suck on them. One of the reasons I prefer small breasted women is they seem to have more responsive nipples. That's a generalization that more than one big-tittied girl has proven to me to be wrong, but I can't help myself. The reality, however, is that big nipples, small nipples, big tits, small tits -- as long as they come in pairs I like them!