Isn't the point of The Dark Side of The Force that it's "easy" power?

The whole point that's repeatedly made over and over again ad nauseam in Star Wars is that the Dark Side is empowered by emotion, primarily negative but not entirely. The Light Side exists without emotion, as in completely without it. Love is not Light Side because it's love, love is Dark Side because it's emotion. Thus the Dark Side can feed off of itself, being empowered by emotion and creating more of it which then empowers it further, but it corrupts. The stronger the emotion the more powerful the Dark Side user can become and negative emotions are usually the strongest, so that's what's favored. There's also the fact that positive emotions often give way to strong negative ones(the heartbreak after a love lost or betrayal), so there's that to factor in too.

The Light Side is static and does not greatly empower its users whatsoever, it is simply a natural flow of energy which exists in the universe and can be utilized by those with the aptitude. (Whether you see it as channeled through midichlorians or not, the principle is the same.) So a Jedi can never achieve the individual strength of a Sith, period, without succumbing to the Dark Side to some degree or another. It just doesn't work that way. However a Jedi is generally in greater control of their abilities as their judgment is not clouded by intense emotion, which can allow them an upper hand under the right circumstances. Arguably it's this intense power which the Sith wield which is what causes them to be physically deteriorated over time, but the specifics are never nailed down very well on that.

tl;dr the space monks don't have jack shit on the space berzerkers for raw power, but they're also less likely to get themselves killed through their own fault.

Kylo Ren's conflict makes sense to me. He's not inherently a bad person, but he's been a victim of circumstances which led him down a dark path.

Rey's not totally on the light side though. Pure light side means no emotion. George Lucas really shot himself in the foot when he wrote that, given that our protagonists showing little emotion doesn't make for a fantastic story, so the only way to make it work is to undermine the very nature of the Jedi, but whatever. Clearly the writers of the new movies understand this, because they're portraying Rey as more of a Grey-ish force user than a pure Light side user, and kind of moving away from the Jedi with Luke's death, which was nicely exemplified by Yoda's attitude towards the Jedi texts.

They're doing the same thing with the dark side and the Sith though. Both our main force using characters aren't pure light or dark, and aren't Jedi or Sith, but they each sway far enough in opposite directions to be at odds. It makes for a much more complex and interesting story to me. In the past (in canon movies) there were good guys, bad guys, and one guy who hated sand, and that was the entire spectrum of light and dark. What we have now is better.

I think they call it "plot". It's a power much greater than we could ever understand.

Well it is more seductive