But again, [by scanning] you are introducing scan and limitation of jpeg files so the benefit of film is debateable.
In a nutshell, if you are printing digitally to photo paper, then the benefit of film is dubious and it will cost more to do. That, as I understand it, is one of the major reasons why a lot of wedding photographers went digital, because the labs went digital and the scan process is usually crap.
i.e. do it digitally unless you are printing direct from film to photo paper or unless you want to pay for high quality scans.
Eeeh, no. Film handles much better than digital, it's easier to shoot as you will have MUCH more flexibility when printing (use the program automatic mode and all is happy), and it will provide higher quality.
They went digital because:
A. Everyone else was going digital
B. Digital Cameras happen to be happier at higher ISOs, good indoors
C. It was easier and cheaper on a project to project basis
The downside to digital is not JPG compression, you can scan in tiff, and the minilab scanners are very good. JPG, provided the compression setting is not too low for the relative complexity of the image, is an AMAZING file format which can greatly reduce file size with no loss in bit depth, resolution, or significant quality. Unless you are enlarging to 20x30 from your 6 megapixel camera, there's really no difference between JPG and RAW.
The downside to digital (among issues of sudden deletion of files, this happens with all cameras) is the linear response of the chip. It handles highlights like dog crap, but trades this off for better shadow detail. Digital cameras are also inherantly VERY sharp and saturated. Not all people want diamond tipped sharp images with colors off the wall.
By all means shoot it digital. That little catch that you can get clear images at 6400 ISO with a D3 happens to be a VERY BIG CATCH.