Boy, that's not a loaded question or anything.
Porn is tricky because it sits smack in the center of a whole bunch of issues, ranging from our society's sexual ignorance to questions of representation of both genders to basic moral questions. There are two basic questions: is it OK for porn to exist, and is it OK to watch porn?
As far as existing goes, yes, absolutely. In America, at least, there's the right to free speech, and a lengthy collection of court cases saying that if you want to film two or more consenting adults having sex and show it to other people, go for it. Nobody has to like it, nobody has to watch it, but it has every right to exist.
As far as watching, I would also say yes. Fantasy is a part of being human, and so is sexuality. We're going to combine the two whether we want to or not; we've been having erotic dreams since the beginning of time. Porn lets us gratify our sexual drives or explore fantasies we may have by ourselves, in private.
Just, if you're going to do that, consider closing your window.
I'm not a fan of porn for several reasons, though not looking to start a crusade or anything. First of all, porn is basically prostitution plus a video camera (female "actors" get paid 5-10x what male "actors" are paid). Second, why would a guy want to watch a pornstar with a bigger dick having sex with a woman who the guy (watching) can't have? It seems homoerotic and un-sexy. Then again, I have a boyfriend (who's similarly creeped out by porn) and an imagination that's full of fantasies based on real sex, not porn.
May I point out - there is some very LARGE reasons for why actresses in porn are paid more than their male counterparts. One of those would be that she's getting that huge thing shoved up inside of her constantly, another would be that the guy is getting paid to have sex -- though I'm sure this applies to some of the women (obviously they like it given their work) but I'm also sure some of those guys would be willing to do it for free if it meant having sex with some of those chicks and instead their being paid for it. Also, female actors in porn in general have to go through a lot more than their male counters - such as the worry of birth control, sometimes they are actually REQUIRED to get boob jobs and other PS in order to keep their jobs. If their happy doing it though (the men and women) then I really dont see why anyone should judge their choices. (I'm aware that last part isn't what you were doing at all and I'm not implying that it was. That was simply a final passing thought that I wanted to include.)
anyone who supports & defends porn is mentally unhealthy & gross!
I think porn is fine...as long as it's within reason. I've known girls who get all pissed off over their guys watching porn, and I think for the most part, their own insecurities are to blame for that. But, on the flip side, if it ever reaches the point where a guy would rather watch porn than have sex with his real-life girl, then it is a problem. The fact is, us humans are sexual beings, and even if you're in a relationship with someone, you aren't going to be around them every second of the day. My boyfriend likes porn, but the only time he really watches it is if we haven't seen each other in a day or 2 and he's started to get really horny. If you REALLY don't like the idea of your guy getting off on watching other people have sex, why not just make a porno of your own for him to pull out when he needs some visual stimulation? ;-)
I highly agree with GeorgiaPeach's comment on it - porn is always fine within reason. Admittedly I get annoyed sometimes when it's obvious my guy's been watching porn but that's usually just cause we had sex earlier that day and I clearly underestimate some males need for sex. But he knows that I watch porn when he's not around and I don't expect him to give it up completely for me. Me and my bf have even made our own porn for each other but obviously I'm not gonna be stupid and think I'm the ONLY body that can turn him on and he knows he's not gonna get physical with anyone for real so he can check out virutal chicks and be safe. For me I'm just a voyeur so obviously I have my own issues according to some people. But in actuality there's nothing unhealthy about porn (again within reason), it's simply a visual stimulation in order to assist other kinds of stimulation. Stimulation that I would like to point out has been proven to be VERY healthy and is often encouraged by those who aren't uber religious or prude. The worst thing about porn is that plots really, other than that I say if you wanna get off then at least it's better than a hooker. *shrug*