This happens on all platforms. This morning Google announced that Android 4.3 would be rolled out to Nexus devices starting today, and androidcentral is lit up with users impatiently waiting for the update. We'll never be satisfied!
However, I understand where you're coming from. Updates to iOS & Android, at least the "minor" updates to the current OS version, are mostly bug fixes and cool additions. WP updates are needed for basic important features that are currently missing. That does put more of an urgency on it.