Rand Paul supports social justice, that is all you need to know to understand that the man is willing to say anything to win San election and cannot be trusted.
Most important issue to me is fiscal sanity. With $18,000,000,000,000 in official recorded debt, and many times more in unfunded liabilities in signed law, we are headed towards Niagara falls in a boat without paddle. Social justice will not matter when country goes bankrupt. Take a good look at Greece and Japan.
Aside from that, a governor has much better chance to win presidency and Rand Paul has no executive experience.