I have been is a room full of Roman Catholics or a mixed group and found the same.
You wrote:
“I have been in a room full of protestants many times and never heard any arguments concerning doctrine or the Bible.”
I have. Bring up infant baptism to a Baptist and Episcopalian at the same time. Throw in a Presbyterian for good measure.
“I have heard many speak on how God has changed their lives and how His love is so awesome.”
Me too. Then bring up infant baptism, the canon of scripture, the authority of the church, justification, works and grace, birth control, abortion, etc. You’ll see more than just the love of Christ. You’ll see arguing.
“I have been is a room full of Roman Catholics or a mixed group and found the same.”
True enough.