Right now.. you can easily mine over 9000 (literally) satoshi per minute on a single half-decent GPU!
People will surely look back at this as a golden age of mining.
Yeah, I'd say it'll still be a golden age at least until we hit the second cut in generation value to 12.5 BT/Block. By that point, the difficulty will probably be so high, it would no longer be profitable at all to mine.
Then again, that's the point of the difficulty. We'll reach equilibrium at some point...