I was an actor once, damn it. Now look at me. Look at me!
In 4.08 Emma wanted to give up her magic because it was hurting her loved ones. She asked Rumplestiltskin what he would do. He said he wouldn't go in there for anything. Now 2 seasons later, do you think that meant Rumple would never give up his dark one powers, not even for his family? He did choose to do the right thing in the finale, but it did not involve him having to give up his power. Do you think if his magic was hurting Belle and Gideon he would be able to give it up?