If you're one of the educated white folks whose family lost a plantation or Havana mansion, I can understand you hate the Castros. It's like getting kicked out of Paris and 60 years later the city is literally crumbling. For a while it was like a civilization trapped in amber but infrastructure has gone over the line into complete decay.
On the plus side is good education, good health care, not a lot of crime, until recently a guarantee of a job that would keep body and soul together.
The Castros still have > 50% popular support, they have managed to maintain control of the country and the armed forces despite all their failures, foreign military adventures, withdrawal of Russian support, constant pressure from the USA.
It's a very mixed bag but not the one-sided disaster we constantly hear about from people who make a cottage industry of selling that story (someone has got the US to spend $500m on broadcasts to Cuba no one can receive, and that's just one example).
Moving to a more liberalized economy and attracting foreign investment without causing social unrest, giving up control will be a challenge, and the fact that all the educated people want to leave will not make it easier.
these were interesting http://fusion.net/story/116226/historic-poll-top-25-findings...
http://ftalphaville.ft.com/2016/03/21/2157021/the-us-and-cub...
http://www.newyorker.com/news/daily-comment/cuba-after-obama...
https://medium.com/@dtemkin/spending-the-last-week-in-cuba-w...