Oh yes, the light ....
Besides the obvious advantages of " flat sailing" and no tacking...
There is more to it...I think we can all relate to it - pass certain age sail handling, sail changes , going forward in rough seas because the line or something else has jammed , or you can't furl or drop the jib, etc...it all just lost the charm and sailing in one direction and controlling your progress from the safety of pilothouse is the way to go.
I know that the wind " fuel" is cheap, but really, is it? Sails are expensive...
Some may say that diesel fuel is expensive - it is , true but when you buy a ferrari, do you ask for the fuel milage ?
So trawler is the way to go...

Andre