Ya lots of people like them but for me there are more reasons to not use them. For someone starting out i think the proper advice is getting keybinds and movement down first, if they then feel like clicking frames isnt for them they can make the switch. Im personally a better healer without them, in cata i had many WoL parses in the top 10 and top parse on archimedes 10 heroic for a long time clicking raid frames. This was on a pally too, so it was a lot of targeted heals.