The whole point of s’mores is fireplace, firepit or campfire entertainment with the family. You roast the marshmallow on an actual flame, then use the residual heat to melt a chocolate bar, grip the gooey goodness between two graham crackers, and go to town on it. Making them is far more enjoyable than eating them. Watching your children make them is even better.
You can do it in the microwave instead, if you like. But the crackers lose their crispiness, the marshmallow slides everywhere, it’s just a mess. There is, however, a device that will make the best microwave s’mores ever.