Barebacking is also addictive... 84% of the guys on my site said "I can't keep away from it even when I want to"
http://www.breedingzone.com/threads/2872-Would-You-Say-Barebacking-Is-Addictive
Another poster below you mentioned sexual addiction... It can definitely be addictive. But being in a city where most people are functional alcoholics - IMHO addictive behavior is only a problem when you can't continue to function (job, relationships, etc.) When you mix barebacking with drugs it can most certainly lead to something severe enough to need professional help, but I'd say most barebackers are completely functional and their "addiction" is essentially just a hobby...
No, I'm saying
chances are your poz friends became poz by getting fucked bareback by a poz top. There are guys who become poz while having safe sex - I'm not denying that - what I'm saying is
most of your poz friends got it by letting a poz top fuck them raw. Chances are they don't talk to you about it because they know you'll judge them. And even if they feel guilty for letting it happen, chances are they're having bareback sex with other poz guys (but that's another topic).
By and large gay sex
IS responsible for HIV/AIDS. Just look at the data. That doesn't make us monsters and it doesn't make gay sex "dirty" or evil. We're doing something that's completely normal and natural.
Assuming your friend is telling the truth (it's a common lie, but true for a few)... What we don't talk about is that there is no such thing as safe sex with a poz top (unless he's on meds and "consistently undetectable"). Condoms fail between 5 and 10% of the time. People become poz while having safe sex. Then they have bareback sex once, test poz, and assume it they became poz because they barebacked when they actually became poz because of condom failure while having "safe" sex with a poz top.
To me people have the right to do what they want to with their own bodies. Period. I think it crosses the line when they lie to sexual partners who ask direct questions. There is no freedom to lie to someone about something that is as serious as HIV (or Hep C). But at the same time "are you clean?" is not a properly phrased question - people need to take responsibility for their own health by asking good, complete questions.
Guys who like anonymous sex basically see sex as a sport. It's how they want to live their lives - it gives them fulfillment. What your talking about is repression. Some people value quality over quantity. It's their body - their choice.
After saying there was no comparison you just proceeded to show how they were comparable. Smokers are addicted to smoking. Bug chasers are addicted to sex. Most bug chasers "just let it happen" (like smokers let lung cancer happen). Almost no bug chasers chase AIDS - they chase HIV. There is no virus for lung cancer - so nothing to chase.
Typically they "just want to get it over with" so they can move on with their life. The fear of HIV is disruptive to them, but they know it's inevitable, so they want to get through the fear phase to the point where it's just done.
You could say the same thing about smokers and over-eaters. Both are behaviors that result in disease that society has to pick up the medical bill for. Same for people who ride motorcycles, people who own guns, and so on and so on... There are a lot of things people do that other people have to pick up the tab for. Personally I think this particular one is considered "the worst of the worst" because sex (and particularly gay sex) is seen as "dirty" and "evil" in our puritan society. I reject gay sex as dirty/evil and ergo, based on the harm done, I question anyone who treats barebacking more harshly than smoking or over-eating - both of those kill more gay guys than barebacking.