I use "Jump to the End" when I've been away, to catch up on current stuff. Then when I have time I scroll backwards to ogle all the pretty pictures or if a topic is interesting.
By starting new threads for each question, people also get lost or ignored if nobody goes and finds the new thread. It fades quickly down the list and those people think we couldn't be bothered. Whereas if they keep one thread going, everyone who found their original thread will be watching for new questions.
Then, when a month later someone else comes along with the same question, it's easier to find the thread that addresses it, if all those related questions are in one thread. We do get a lot of repeat questions here, especially about Phals . . .