JOY is objectively the greatest emotion in a cost to benefit analysis.
Will JOY into every macro and micro process and part of your physiology and enjoy the benefits of a reformed body, will and awareness that now runs on the JOY OS.
I suggest that JOY is closest to life force, and can move between active and passive states effortlessly. I also suggest that JOY boosts intelligence, power, flow, wisdom, creativity and productivity. Thus, one should choose JOY as their favorite emotional 'flavor' for it has the least cost and greatest benefits.
The reason it is the best is because one's body does not need to defend itself from it, and likes to be shared. It is fulfilling and healthy.
Love on the other hand can lead one to self-sacrifice and thus the user may not defend themselves, and become too passive to attacks.
Hate has more killing potential, but is difficult to maintain for any extended period of time without constant negation from turning on its user. Yes? Also, it tends to destroy other emotions whilst positive ones permit co-existence and thus a greater repertoire and reservoir of energies and powers to draw from. Greyscale vs color.
Discussion:
>What magics are possible with different emotions?
>What capacities and abilities are gained through different emotions?
>Positive vs Negative emotions and emotional affinities for combo moves and synthesized emotions/fuel e.g. courage + hate + pride = war???