I thinks it’s mainly because they focus on the quality. I, for example, subscribed to http://premiumpornsites.net/ which I consider to be the finest premium porn sites collection.
I ma agree with you, my friend. On paid adult sites the quality is better than free ones, and there is a lot more choice of contents. Like you I have a favorite guide to choose the best premium pay porn sites, and it is http://bestpornsitespay.com/
Some people are smart enough to recognize that porn isn’t free to produce and if literally, nobody pays for it, then the quality of productions will deplete drastically and porn, as you know and love it, will eventually cease to exist.
Free sites supply poor quality of videos and sometimes it contains watermarks which are very disgusting. They provide you pirated videos and almost every free site contains almost similar content. But at premium porn sites, you will get HD quality, unique pornstar.
When a member joins my personal site MyGaySites(http://mygaysites.com/best-gay-premium-sites), I know they’re joining because they think having access to 16 porn stars’ personal websites is worth $25 a month. And they like getting to chat with me on cam every week, as well as interact with me on the message boards. I know a lot of guys join my site simply because they know I will respect them for supporting me instead of the crappy free sites.
In my opinion, if they’re not supporting my work by paying to watch it, then I don’t care to interact with them on social media nor see their comments. If you don’t value what I do, then I don’t value what you do or say. It’s that simple.
Some just like knowing that they’re supporting a company whose content they like. Some might have a fetish so specific that they have a hard time finding the content they like on free sites.