If I tried to DD to get MP back in any of the linkshells I've been in, I'd either be kicked, or I'd be someone who would have to sit out. Abyssea or no.

And again, I haven't seen anywhere where the OP has said that they are having difficulty healing by not knowing how to conserve MP. Just the straight fact that unless under unusual circumstances, we have no natural refresh to us. DD WHM isn't natural. Sure, we have the abilities, but the general accepted/expected WHM will get "WTF r u doin'??" as a response to pulling out a club or staff to get MP back. BLM and RDMs don't get a WTF when they cast aspir or refresh.