There are so many reasons to oppose gambling as a means of public fund raising. Here is an article that explains from the standpoint of professional economists why it is a bad idea.
http://www.midhudsonnews.com/News/2012/January/03/Casinos_survey-03Jan12.htm
From a Biblical point of view, it is poor stewardship of resources for those who gamble. From the standpoint of fairness, it represents the rich failing to take fair share responsibility and instead passing off their responsibility to raise funds onto the poor who tend to be the gamblers.
This is one more way Cuomo is becoming the poster boy for promoting immorality in New York.