That is beautiful! Excellent Shot!!!
Neat capture. Waiting for the kids really made the shot!
Usually adding a human element to the shot works a lot more than just a 'normal' shot and this one proves it...Excellent take on the opportunity offered.
I would tend to agree with you on your point, but one has to be careful here. Including people in an image means also ensuring that they are adding to the image and are scaled appropriately. If they play too small a role, they often end up detracting and if they are too large, one risks turning a landscape shot into a portrait.
That being said, I do find that when it is well done, your advice is quite solid. It adds "life" into the image and helps create a sense of scale too.