Gaming without a mouse is not really something gamedevelopers think about or should think about. Like, you cant play counterstrike or league of legends without a mouse right.
Just because you cannot play Counterstrike or League of Legends without an external mouse, that doesn't mean that game developers don't think about these kinds of things. I myself have been creating video games for over a year and I design them to be friendly to touchpads and external mice. If you design around the constraints of touchpads, laptop users don't have to suffer.
Well said. I don't think it's a criminal offense to require a mouse, just like touch screen games on phones don't translate to the desktop well, but that doesn't mean it should be ignored if it's possible within the design constraints.