Anybody who knows me, which only a couple of you do, knows that I sleep, eat, breath, and almost even crap Gorons. I loves them so. *swoons* <--in a manly way.
I don't think they went extinct. Just because they're not featured in some of the games doesn't mean they're extinct. I'm sure that they can build stordy enough boats to last long enough to find new land when most of the world was flooded. We also know that there are Gorons in Termina, which means that they could escape there to find refuge from said floods as they approached. Anyway, yeah... that's my opinionation. (yes i know that's not a real word, freakin grammar nazis... HEIL WEBSTER)