“It may not be lack of loyalty so much as it is the presence of so many options that is causing Protestants to be about as loyal to a brand of toothpaste or bathroom tissue as they are to their church denomination.  It’s not as though there are two hundred different Roman Catholic denominations.  On the Protestant side, there are scores of different denominations, with some of them fairly similar in practice and theology.  The story of this research is that many Protestants may not see a lot of difference among some of these denominations, while Catholics see a lot of difference between the Roman Catholic church and any other options they would have.”