I find the title of your thread and much of your post highly offensive, inflammatory, and not in line with Catholic teaching.
I converted to Catholicism after 47 years of evangelical Protestantism.
According to the Catechism of the Catholic Church, many of the Protestant sects ARE Christians, and their baptisms are legitimate (Trinitarian formula). These sects teach a portion of the Gospel. Protestants are considered "separated brethren."
I would like to suggest that instead of looking down your nose with obvious derision on Protestants and labelling them as liars who spread untruths about Catholicism, that you get to know some Protestant Christians and become friends with them. Perhaps eventually you be able to bring yourself to visit their churches in order to better understand Protestant Christianity and its appeal.
I would say that the reason why the Protestant Church attracts a great many people is that Protestants INVITE people to become Christians, hence the name, "Evangelicals." Meanwhile many Catholics remain fundamentalist-type separatists who attend Mass and do very little to promote the Church of Jesus Christ among the non-Catholics. Most Catholics never approach their Protestant friends and acquaintances with any type of warm and friendly invitation because they expect the clergy to do the work of evangelism.
The Bible says that we will be held accountable for not offering the Gospel to those in desperate need. How can any of you sit back and do nothing while your Protestant friends have nothing except good music and the Bible? Doesn't it break your heart to see these churches with nothing to offer except a Book instead Jesus Christ Truly Present, Body and Blood, Soul and Divinity?
In all the years before I became a Catholic, I was never approached by any Catholic and invited to come to Mass or check out the Catholic Church, although I will say that many Catholics behaved in a charitable and kind-hearted way to me and never called me a "liar" or accused me of spreading lies about their Church.
DChacon, I agree that there are some Protestant sects and some Protestants who are on a personal warpath against the Catholic Church. But the majority of Protestants bear no ill will against Catholics and the Catholic Church. Indeed, many Evangelical Protestants are investigating Catholic teachings and either adopting many of their practices, or even converting as we did.
Please cease from your hostile attitude against Protestants and instead, choose to love them into the Catholic Church.