Guys, don't bite the hand that feeds you.
Often, for most guys, good enough is just not good enough. And, if these guys want to change their oil & filter too often, let 'em. As long as they recycle the used oil, what harm does it do?
When you add up the cost of keeping a relatively new (no more than 3-4 years old) car on the road these days, excessive oil changes are a drop in the crankcase. Think of depreciation, insurance, fuel, tires, highway tolls, parking etc ... which can add up to $2,500-$4,000+ per year Dropping an extra $30-50 on oil & filters in a year is insignificant.
Besides, as was pointed out earlier, it IS awfully cheap insurance against sludging, oxidation, wear, etc ...
I suppose the time and hassle of buying the oil & supplies, doing the change and then returning the oil is something to consider. I put over 17,000 mile on my car a year so these extremely short intervals would have me changing my oil about every other month ... not something I’d like to do.
If I had a Honda S2000 (stock redline is 8,900 RPMs) or a high-winding sport bike, I'd be doing mine every 2,000 with a dino oil or 3,000-3,500 with a synthetic or good synthetic blend.