Extended oil-change intervals are great for reducing the overall environmental waste associated with each car, which is why all the manufacturers are going that way.

Also, today's oil (even non-synthetic) is much hardier than that of the past, so 3K changes are really not necessary for most drivers.

Changing it earlier won't hurt anything but your oil budget, and may help extend the life of the engine. I don't go for the 10K intervals either.