It is a mix between lazy, multitasking, and getting diverted. Usually I'll get on the PC for a half an hour to an hour to look up something or just read some news. Before I am finished, I get called away to take care of some non-computer things. (It seems to happen a lot when you have a wife and small kids.) And then it will be a few days before I get back to the computer; I will need to reference something again, so I will open new tabs or windows because I didn't finish what I was looking at before. After a few months, you've managed to accumulate hundreds of tabs. Bookmarks might be a good solution, but I'd have to be motivated to bookmark a few hundred tabs. And then I'd have to manage the bookmarks.