Because that’s the way I browse.
I pull up the main board page, link ATMB, it opens a list of threads. Then copy and past the first thread link to the next tab, and read thread. When done with that thread, I go to the ATMB tab, copy next link, paste in reading tab. Repeat for all threads I want to read in ATMB. Now I hit the back button on the ATMB page, it loads me to the main page, and I select Comments forum. Repeat process.
I like having windows on the screen, application tabs at the footer of the screen, and tabs within the windows in consistent places. I like knowing that the first tab is the SD main page, the second tab is the Board forum page, after that come the thread pages. It makes it easier for me to find things, it just is the way I like things.
I absolutely hate the feature of Windows where the toolbar at the bottom “group similar toolbar items”. No, I can’t find anything when the computer moves the widows around willy nilly. Say I open a document, then open another document, then open a third document, and suddenly Windows groups them in one item - now they’re stacked in that item and I have to hunt for them. It irritates me to no end.
Thankfully I can deselect that “feature”, which I do. Of course, at work when I log on to new computers (as I frequently do when working on site, out of my office), I have to reset that feature (and the background screen - I abhor the default green field picture).
I like the back button. It takes me back to the page I was on, in the location I was at. Don’t have to scroll back through the page.
I like my forum list being consistent from when I first pulled it up, and I read down all the threads (that interest me) in order until I run out of new updates. I don’t want the page getting reshuffled every time I come back to the forum list. I want to control when the forum list is reshuffled. It helps me keep my place, say if I am interrupted and have to take care of something, when I come back to my desktop, I know where I am.