Sorry if I perhaps looks more sarcastic than usual, it's not against you, but I really don't get most of what you answered.
how they act the fantasy,
Hmm... Yeah, I can understand that.
When my wife was still alive, sometimes we watched porn together to improve the mood. In this context the fantasy can effectively matters. But to be totally honest, it lasted until we had our second child. After this, we didn't cared this much about the context and had the habit to advance straight to the action, and later, with internet, to watch movie without useless content. We wanted to have sex, not a romantic night ; no time for this when you're tired after your day and have to wake up early because the children have school.
What for ? I recognize that some guys are good looking or have charisma, and the same surely apply to porn actors, but what's the interest ?
"Wow, this guy's have so much class, a young Brad Pitt doing porn, I'll watch more of those videos". Coming from Rafster I can understand, but from a straight guy I don't.
do the girls like being fucked by him,
I hope I'll not crush your dreams, but they rarely do. A good porn actress isn't selected on her beauty, but on her capacity to fake her pleasure ; yet it's less true nowadays, they rarely care to fake it. I remember one of the last "pro porn" I watched, the girl was really convincing, at least as long as you wasn't looking at her face clearly tense with pain.
As for amateurs, it's really rare that the girl have an orgasm. She can have pleasure, but she rarely reach its climax.
This said, this also I get it. There's nothing more boring that porn with a silent girl. So, yeah, but once again outside of amateur porn, it don't depend of the guy, but on the capacity the girl have to fake it.
can they perform and so on.
I'm way more interested by the performance of the girl. It's what effectively tell you if she get pleasure doing it or not. The guy can do whatever he want, a girl that know her body will have an orgasm, even if it's despite the guy performance.
There's many videos like that, especially amateur ones, where you can clearly see the girl not caring a single second about her partner. He's nothing more than an automated dildo in "in and out" mode, and it's by moving her own hips that she get her pleasure.
nothing worse than an out-of-shape dude with no charisma, looking like shit, and to top it off he can't even shoot jizz but weakly oozes it on the disgusted girl who tries her best to not show how turned off she is.
For the girl part, I get it. But once again the guy I don't even know what he looks like.
And, by the way, there's out of shape dude with no charisma and looking like shit, that are wonderful lovers, even if they can't shot their jizz. In the same time, nowadays 80% of the time the guy don't even have more than a mild erection. But well, I guess it talk in favor of knowing who the guy is ; the ones having an effective hard on are more interesting.
the idea that the male star doesn't matter in straight porn is like being fine with getting the best pizza in your life but there's a pile of diarrhea on it.
Well, I totally disagree on this one. But perhaps is it because I'm too old and don't believe in porn tales anymore. Perhaps I shouldn't have wrote this answer, like sometime you regret to have said that wrestling is 100% fake and staged. If people want to believe it, we shouldn't deprive them of this part of fairy tales in their life.