So, in the OP's scenario, Harold wants to have sex with Stacy but since Stacy isn't the town bike (everyone gets a ride) because, presumably, ntr I have to play through what sounds like a pretty bland boy meets girl story just to get to the (not very) interesting bit where Harold and Stacy have bland, unimaginative sex in the exact same 3 positions every other dev uses. Whoopdee- MOTHERFUCKING-doo
Alternatively, Harold could imagine what his and Stacy's first time together would be like and we, get something to fap to while we wait for the real event which, and here's the beauty, could be completely different to the previously dreamt scenario. Harold might dream of a romantic first time together in a hotel room (brief mutual oral, missionary to doggy to cowgirl before she finishes him onto his stomach with her hand, yawn) but maybe it turns out that she's a commited buttslut, maybe she's a futa maybe she's 1 of 4 identical quadruplets who do everything, and I mean EVERYTHING, together
When you play an adult game, everything is fake, there are no real life scenarios; even games with real porn recontextualise those scenes in order to create something new. Has the OP ever masturbated while imagining sex with someone they haven't actually had sex with (or at least in a way that they haven't before, it must be scary to tell the missus you want her to peg you with a 16" horse cock, let alone reveal that you've already bought the necessary equipment)?
TLDR, all sex in porn is fake