Actually I agree with everything you said except this. In fact, all modern scholars have access to the same manuscripts. It’s what they do with them that makes the difference.
Anyway, as to the topic, there’s a number of reasons for a Catholic to use a Catholic Bible. The fact that the seven deuterocanonicals are missing from non-Catholic bibles has already been mentioned. Also, if you are in a Catholic Bible study group, it makes it easier when everyone is using the same translation. If you are using an NAB, it is usually the translation, more or less, you hear at Mass.
Just as it is true there are doctrinal and traditional biases in Catholic Bibles, there are some in Protestant versions. The NIV is a notable example (If you want to read more about this, visit Steve Ray’s site at
www.catholic-convert.com where he has an article about this. I know many serious Protestant Bible readers don’t like the NIV, but it is just an example).
I also second the motion that one should own and refer to several Bibles for private study (I have about ten, I think, with access to many more on-line). No translation is perfect, so it helps to compare.
The most important issue, IMHO, is not the translations themselves, but the
footnotes and study aids that come with many Protestant Study Bibles. On the one hand, they do not reflect 2000 years of the Churches accumulated refection on the Scriptures–no Early Church Fathers, no Aquinas, no Jerome; it’s like they never existed. At the most, you have about 500 years of Reformed thought or, more likely, 200 years of (American or English) Evangelical influence. This is not a slam, just a fact. The Catholic reader who would use these exclusively for study ends up somewhat impoverished as to his own biblical heritage.
On a more troublesome note, some Protestant Study Bibles can even be downright anti-Catholic. A good example is the McArthur Study Bible, edited by John McArthur, a notorious anti-Catholic with whom I am quite familiar. Commonly, these types of Bibles will, in their commentary on certain verses and passages,
go out of their way to target the Catholic understanding of them. These types of Bibles should not be used by any Catholic because of the distorted picture they present of what the Church teaches.