Freemasonry is one of the most American institutions in the world despite originating in England.
It brings with it, a reluctance to mindlessly trust royalty and other authority->Republicanism
Most red-pilled institution in the world. Hated by Arabs, Jews, Communists, Fascists, and related for the ability of the fraternity to threaten the power of totalitarian ideologies/rulers. The fraternity played a massive role in the American Revolution.
Symbolism from the fraternity is everywhere and makes life more rich by providing deeper levels of meaning.
Often made into a scapegoat for unrelated problems.
Strongly encourages nationalism and assimilation.
Requires faith in a supreme being and fits in perfectly with protestantism/deism. It's not satanic. For example, prayers made in lodge are made to the supreme architect of the universe; satan was not the creator, he was a dark angel. York Rite essentially requires you to be Christian. Scottish Rite is more secular than the York Rite in that regard.
American ideals in the US constitution and Bill of Rights were originally masonic principles, heavily supported by Masonic Representation in the signing and legislative processes.
All the big early American thinkers were masons or thought in parallel with the fraternity.
Very inexpensive fraternity that's world-wide in it's influence. The most historic fraternity in the world. Associated with more US politicians than any other institution (masonic politicians were the good ones, you'll notice that we don't have them any more and the best ones served proportionately closer to the US founding).
You get to keep the metric system down.
Unfortunately, the masons have been so battered with anti-masonic bullshit they don't have hardly any power any more and their ranks are thinning. Most lodges are shrinking because fewer and fewer people inquire about membership.
Most Americans can trace their lineage back to a Mason. There was a time when everyone was a Mason.
