Well, firstly I can't get enough of it.
Secondly, there's stuff out there I know I'd want but I don't know about it and tend to discover it months, sometimes years later.
Thirdly, I hate that it costs so much. No, not joining sites (why on earth do that?

), but consider these:
computer ~$2,000 for something top of the line;
high speed connectivity ~ $40 or more monthly;
external hdd ~$150 or more depending on amount of storage;
writable discs ~ only a few bucks, but it adds up;
File hosting services ~again, not expensive and if you meet their dl quotas are free eventually;
antivirus/firewall protection (if not provided free by your cable/dsl company);
TIME.
That's a lot of money all things considered.
Free p0rn is NOT free.
Oh, and I hate people that like to fuck with my free p0rn surfing experience with spam & viruses along with false advertising (not getting what is said you are getting) and those little tattle tales who report all the good shit and have it removed from RS and the like.
Lastly, that there's not enough time to enjoy my addiction - the job always seems to work its way into the equation...
Forgot to add something...
The thing I hate most is the fact that years ago when I was a wee lad in the world of, hmmm, how to put it...getting keys to the front door; yeah, that'll do - securing anon proxies was like taking candy from a baby. Now, it's like trying to hold up Fort Knox. Having 100 working proxies was more work that 2000 years ago. It became so frustrating that it **** me out.
Now THAT'S what I truly hate about porn - not enough damn proxies...