Well of course more is better. Just commenting that most people (even "most pinsiders") aren't going to have 3+ million in retirement (although I'm sure some will). And Pinsiders are not the average population income wise.
At the level your planning on you can live a pretty nice retirement involving no work and still have 3-5 million to pass down when you're gone.
My kids can make their own retirement nest, so I'm not too concerned with eventually chewing into the principle. If things get really bad I'll go drive a boat at Disney