I too was told it was all about the quinine - but I reckon that's a welcome side-effect, no more. Prophylaxis is a nebulous concept, as against immediate relief. Gin tastes yummy in hot weather, and cools the spice-burn (as of course does lemon); I reckon malaria-prevention is a poor third in that race.

Also, yes. We should be more bored and have fewer resources.