Syele,
You are mistaken. Originally there were no pews in Catholic churches. Rich and poor, famous and unknown, had to stand together during the Mass.
It was the Protestants who began the custom of installing pews in (former) Catholic churches. Further, in Puritan spun sects (Quakers, Anabaptists) as well as main stream Methodists and Lutherans, the men sat together on one side and the women sat together on the other side.
The pews were installed so that the ministers could tell their congregations all about what their personal interpretation of biblical passages could be.
It has only been since the late 1950s in America that mainstream Protestants such as Lutherans and Presbytarians have begun to imitate Catholic liturgy. In fact, our Lectionary is used by many Protestant churches!
Visit the south and attend some of our separated brethren’s ‘worship services.’ It is evident that these community churches were that backlash to the colonial ‘established’ churches that the First Amendment, and Thomas Jefferson, were so concerned about. Even today in many black American neighborhoods, the local church’s minister is seen as a political figure to be reckoned with and visited by the candidate-du-jour from the Democratic party.