There are people who would like to tank or heal some but the costs are too high. Not just the respec cost but the cost in not questing, farming, of pvp. I had a druid in vanilla and BC that never healed because in a resto spec questing, farming, and pvp wasn’t any fun. I wanted to heal but i didn’t want to be nerfed in all the rest of the game. I healed with her in wrath. I’m doing the same thing this time around. I’d like to heal with my druid but won’t do it until dual spec is added. Blizzard is making people make a choice, tank or heal and not have fun with the other 3/4 of the game or play the rest of the game and don’t tank or heal.
It’s a question that has been answered dozens of times in these threads. If you were able to read you’d know it.