It took me over 10 hours to farm the Atma of the Fish for one character of mine. For another character, he's still working on his a combined 24 hours of farming for the Atma that drops in Western Thanalan. This is not hyperbole. I actually spent 10 hours farming for a single Atma. I've had to take breaks from Atma farming in order to keep what remains of my sanity.

The RNG can provide swift results for some people, or the extreme opposite for others. And when the results are painfully slow, it just doesn't feel rewarding.

So while I'm not against RNG, I would not complain if they were to adjust the RNG to be less frustrating in the case of Atma.