Rick, Hi.......... all good point you make there, especiall;y about storage. I run a 2Tb NAS drive, double mirrored drives, so not short of storage space; however, when shooting 20+ weddings a year AND wanting to archieve clients pictures, it is a consideration. Some people will always want the latest and greatest and good luck to them; but unless your printing massive posters, that level of resolution is wasted (in my opinion). I show clients some sample images at 200% magnification to let them see the detail and explain no one will ever 'pixel peep' there pictures in real life like that.
At the end of the day, it's what ever you feel comfortable with that matters. Hope you enjoy it. Post up some samples, would love to see 'em?