Jeez, it WAS cheesy and dumb…wasn’t it? I remember getting SO frustrated when I watched it…they ALMOST got rescued!!! And, usually, Gilligan was the reason they didn’t… 
Still, it just had a certain charm somehow. Along with shows like “The Beverly Hillbillies”, “Green Acres” and a few others…I guess they just spoke of a simplier, more innocent time or something. I suppose every generation has something like that…