I don't get how people can use a forum without subscribing?!

Say you even post in just 5 threads in a day you'll never remember them all to go back to them! Before I realized there was a subscribed thread link I was searching the posts by my user name then searching for all the threads that had replies after mine...idiot haha! The user CP puts everything all on one page and I was still clicking subrscribed threads in the pull down for a couple days after it was fixed.