Love and Hate are two constants that live side by side but which is more powerful?
Hate is the Almighty
Some may say that hate is far stronger than love. Love is usually confused with desire, but hate is a thing of its own. Hate consumes our natural reticence and opens us to previously unthinkable actions to "even the score". It is something that brews inside of us, getting stronger and stronger while we try to repress it and be content.
On the other hand, love can be ended by a thoughtless word or action, but hate is unswerving in its single-mindedness. Does that make it more precious then? Something we are more likely to envy, giving it power and sustenance?
I guess hate requires little complex thought or understanding, and it receives support from the selfish ego which is where most people choose to house their minds letting it sit and settle as it starts to manifest their minds with rage and turmoil.
It is a rash impetuous thing that springs up to defend against the new and strange before the rational mind can determine whether the threat is real or not, and it blocks understanding once an initial threat is perceived, hazing the mind in this cloud of rampage.
Love is the True Victor
However, hate and love only have the amount of power the person expressing it gives it. Both love and hate, in my opinion, are intertwined and it is difficult to have one without experience the other. I've often heard the saying that if you hate someone you will have to forgive that person because that hate will eat and sap your energy and destroy their life. However, from this animosity love and tenderness can be achieved over-ruling detestation.
Aversion is surely a powerful feeling but love, in turn, is more familiar and desirable in human beings which we crave and yearn for.
It is something which is beneficial for everyday life, and unlike hate, it benefits our well-being. So in this sense, love is more powerful.
All in all judging both of these emotions by their 'strength' is a pretty complex and subjective variable. I don't think there can be one clear answer to this question.
There is one thing that does become clear in the end and from my own general experiences with love and hate, is that love tends to be a deliberate and voluntary response to life, while hatred seems to be more visceral and involuntary. Both as contagious as each other but both also having different stimulus and triggers to activate one or the other.
We have the choice to give our love to someone, while we are often impulsively bewitched by our own hatred. From this, I would say that love provides us with the greater power because it gives us more active options rather than being restrained by the ever rupturing hate.