Insurance companies like it. There may be some advantage should the boat ever be stolen.
You don't have to buy two sets of Vinyl letters/numbers for the bow.
Charlie P. P31-2 #80 CATNAP
To travel hopefully is a better thing than to arrive - R.L. Stevenson
I suspect that, if you should go to the end of the world, you would find somebody there going farther . . . - H.D. Thoreau