Superman: Rebirth was lovely. "My" Superman is back. He's not in the red-and-blue yet, but he's there in his heart, and that's the important thing. , And the final page was so
right.
I do have to consider his age. He and Lois were in their mid-thirties (at a minimum) when pre-
Flashpoint continuity ended. Ten years have passed for them in the New 52 since. (I'm assuming that time didn't run properly in Telos' domes.) This would make Superman and Lois in their mid-to-late-40s at a minimum. Possibly even fifty.
Superman isn't just more experienced than the rest of the DCU. He's practically an elder statesman.
Mind you, I'm totally fine with an experienced, late-forties Superman.