They accumulate. Every day there are two or three pages you intend to read later, so you leave them open. A month later, you have an extra 100 tabs loaded. After six months, you have 600. There are also clusters of tabs associated with some research you were doing but didn&#x27;t quite finish.<p>Then the problem is it would take a couple of days to go through all the waiting tabs and shut them down, and you don&#x27;t have a couple of days to spare.<p>Eventually you just save them all out as a session and start again, and hope you will learn from your mistakes ;-)<p>I&#x27;ve switched from FF&#x2F;Chrome to FF&#x2F;Vivaldi because it has much better ways to handle tabs and bookmarks than Chrome does. Vivaldi does tab stacking, for example.