I love this scent and wear it often. (I wear Havana more often). Both start off strong (in their own way) and finish with a bay rhum base.
Cuba serves as Havana's country cousin. Whereas Havana is walking into a pipe shop in the city, Cuba hails from the tobacco farm. Anyone who has been on a tobacco farm will recognize Cuba's fecal top note. It doesn't last long, and I feel sorry for those who can't get past it.
Because for me it sets the stage. It takes me to the Cuban (or in my case North Carolina) countryside before basking me in the incredible bay rhum finish.