I purchased the Mini early this month, and 1 week later rumors about a Retina Mini will be coming out in 3 months made me a bit upset at first. But after seeing my wife using the Mini everyday, I'm keeping it. I'll skip the Mini 2 if it's just a Retina display with the same battery life as the current one, but will probably be heavier, and just get the Mini 3 whenever that comes out. And if the Ipad 5 is smaller and significantly lighter than the Ipad 4, and it has a longer battery life, I'll just get that.
The Ipad mini is our first Apple product, and we absolutely love it, even though we don't listen to any music on it.