It is their greatest pleasure to count, count, and recount their most prized possession. Look at that. As we are talking, one of the rooms has become free. You may go in ma'am. On the way home from the bank .
People count and recount their money every day.
You know, Avi, this gives you an insight in this week's Torah Portion. The answer is that the Jewish people are very dear to Him. We are like His prized possession. Therefore, He enjoys counting us. Similar to the way that the man in the bank enjoys counting his valuables.