Product managers are very passionate about their product. They by their DNA can only envisage success and fame of the product they own. Rarely would you see a product manager talking passionately about declaring EOL of their product. However there are situations wherein it becomes important to think of alternates, situations where limiting the losses takes higher priority than enhancing product features. Here are few signs of aging product that might be causing similar situation in your organization, and if you happen to observe similar behaviors / patterns with the product that you own than it may be the time to initiate EOL