My father migrated from Cuba in the 60's and anytime I asked him whether it was worth me visiting he promptly said

"No, absolutely not. Don't even waste your time considering it. Castro ruined it and it will never be the same".

I think the moral is that for many Cubans the embargo isn't against the people, it's against the Cuban government, and they genuinely hate the government with every fiber of their existence. They hate what Castro took from them and have no dissolutions that letting up the embargo would strengthen that governments rule while only providing minuscule benefits to the people. Until the government regime changes in Cuba, any pressure we can apply is worth it.