Why does it seem the majority of parks are always friendlier/less detrimental to HR to RF than to LF?

I have a lineup stacked with righties and would love a park that favours HR to LF but limits HR to RF. There's only a handful and it seems they're all fairly extreme hitters parks.

The only modern parks that are more HR friendly to RH hitters are Fenway and Tropicana.

It's baseball history. While modern parks are mostly symetrical, older parks were not. At one time teams had to build parks on whatever land they could find and nice symetrical parks didn't always fit. Given an asymetrical park, a short fence in right was usually favored since practically all early players only had pull power and the vast majority hit right handed.

This become easier to visualize if you ever played ball in a rectangular lot. Given such a lot, home is positioned in a corner with a minor and major edge defining the foul lines. The major edge extending from home normally defines the thirdbase line and extends to the LF foul line. The minor edge extends past first to define the right field foul line. The corner oposite home is then cut off with a fence (or fences) that extend to the power alleys. This also shows why centerfield is the deepest part of most parks even though most players can generate the most power by pulling the ball to nearly straight or right field.

Interesting. I never thought of the concept of making the opposite field shorter. I was thinking if most hitters were righties, then LF should be shorter so they could pull more HR.