Did a search here regarding naming quilts, and didn't really find a good reason to do so on the board. Here are some of my thoughts/opinions:
Future generations that may find your quilt will appreciate knowing where it was made, when it was made, for whom it was made, perhaps why it was made, and who made it - both the person that pieced the quilt and the one that did the quilting. Having this information establishes provenance and gives historians a glimpse into the lifestyle of the era.
This information would probably be appreciated and considered valuable or important to family members because it is a part of their family history. This kind of information can be useful in appraising a quilt - it helps date fabric. I am sure that my quilts will never be considered valuable and they will probably never reach the quality necessary to be juried in to a quilt show - but I know that my children and grandchildren appreciate the things that I have made, and have delighted in the information that has been found in our family history.
I believe that it is important to at least label your quilts and give as much information as possible. By law, at least in Arizona, the statutory definition of a record begins with the words: "regardless of physical form or characteristic". By this definition, the quilts we make are "records." Naming a quilt gives a little insight in to the thoughts and feelings you might have had either for the quilt you were creating or the person for whom you made the quilt.
When you find a quilt made years and years ago, don't you find yourself wondering about the person that made it and wishing you knew more about them? Just a little something to think about the next time you are making a quilt - future generations may wonder the same thing about you and your quilt.
Whew - sorry I went on and on here. Considering the wide range of lifestyles, and members who live all over the world and go from new quilter to what appears to be "the pros from Dover" (darn there are some really, really talented people on this board), I am really interested in knowing some of your thoughts and opinions on this subject.