usually i dont touch myself at all until i find the perfect scene in which case i take my time going through it and nut to it. it that perfect scene never comes then neither do it lol
If I just wanted to cum I'd watch porn. A huge part of the fun of these game is the plot, anticipation, build-up, and/or sexual tension between characters.
And on the other end, even if characters fuck immediately, there's fun in seeing how their emotional relationship progresses.