There's a wide spectrum of opinions on this. I personally think it's hot and it turns me on. I could live without it but I'm always quite intrigued by things that I didn't know were possible. I can understand that some women aren't into it. It's definitely something guys who can do, seemingly want to keep on the down low. And that's really understandable too.
For me, yes self-sucking is a turn on, not a must have or a deal breaker but I enjoy it. However, I get turned off if I get the feeling that I'm just another number out in the audience. Like someone whose first post is "hi I'm hung 23 from NC, looking to skype and video stroke for any ladies" you know what I mean. Even if you aren't discerning in the slightest, at least try not to make this fact so blatant.
It's not like I'd go in thinking "OMG this is like our first real date" snicker but yeah, everyone wants to feel special. Not like a statistic on some stranger's pointless random agenda