I’m a convert from evangelical Protestantism to Catholicism.
We must keep in mind that everything that evangelical Protestants do and say is based on the Bible, or more accurately, on their interpretation of the Bible. There is no other authority. There is no “sacred tradition.” And history doesn’t matter much–if the evangelical Protestant pastors discover something in the Bible that seems to be opposed to something that is historically done in their churches, then the historically-done action will be eliminated.
An example of this would be contraception. Even though up until the 1960s, contraception was considered wrong by Protestants (same as Catholic teaching), it’s now OK, because it’s not specifically forbidden in the Bible.
Another example would be masturbation. Again, historically this practice was considered
“wrong” by evangelical Protestants (same as Catholic teaching), but now it is not considered wrong because it’s not specifically condemned in the Bible.
Even though there is no human authority in the evangelical Protestant churches, many of the denominational evangelical Protestant churches have a human organization that is appointed by the members of the denomination, and is charged with caring for the flock and maintaining orthodox doctrine (according to that denomination). Evangelical Protestants voluntarily commit to submitting to this authority (which means that they can also break away from that authority). If a teaching is generally accepted among a majority consensus of the pastors and teachers in the denomination, it will become doctrine. There is no “Chair of Peter” or any kind of “Magisterium” that makes decisions. The reason why contraception is now “OK” is because a majority of the pastors and teachers came to believe, based on the Bible, that it’s OK.
Now as to what that has to do with “ritual”–the reason why evangelical Protestants do not have a positive attitude about ritual is that it is not in the Bible, or at least, not in the New Testament.
Some posters have pointed out that Jesus followed rituals. Yes, but He also eliminated ritual Judaism. No more Temple or sacrifices, because HE is the Temple, and HE is the sacrificed Lamb. So this would seem to indicate that Jesus Himself elimated ritualistic religion.
One of the Bible passages that comes to mind is Colossians 2: 16-23. I won’t try to quote it entirely here, but it talks about various rituals and why they are not necessary. There are other New Testament verses that seem to indicate that a “ritual” isn’t necessary.
Again, it’s not so much that the liturgy is condemned by the New Testament, but rather, that it is not specifically spelled out and listed. Generally speaking, when the Bible is silent about something, evangelical Protestants believe that this thing is not necessary, and that it can’t be “required.”
Finally, a lot of evangelical Protestants believe that rituals, including rituals in the Catholic Church, are based on various pagan practices. Some of these pagan rites had associations with the occult, demonism, and Satanism. Evangelical Protestants are often very careful to stay away from anything that could be demonic; e.g., I know evangelical Protestants who cut the horoscope out of the newspaper before they bring it into their house. I think a lot of evangelical Protestants find Catholic rituals troubling because they think that these might be based on some of the old occult rituals. E.g., we were taught to avoid Marianism of any kind because, according to the evangelical Protestant teachings, it was based on the Babylonian goddess worship, which often involved various occult practices and witchcraft. (Again, remember that history isn’t usually very influential to evangelical Protestants.)