What is the point of walkthroughs?

Hey all,Just getting into AB2, around level 55 or so. The "lives" system...well, I don't mind a great deal. Rovio needs to make their money, etc.What I am not sure I understand is the point of even posting walkthroughs? The levels are different every time, yes? Sometimes radically different. On level 26 I wasted all my lives and all the "Watch video" lives and still didn't even finish it. The next morning I three-starred it the first time I tried again. Why? Because the structures were easier to destroy, cards had a more favorable distribution, and I got dealt two spell cards in the level.That's not even mentioning those wholly annoying float pigs and umbrella pigs that also seem mostly random.It's sort of like when going to an AB Star Wars 2 walkthrough and seeing them use an infinite Darth Vader. Well, yeah, duh. Darth is going to get it done for you a great deal of the time, but we don't all have that character (or at least not many).I'm not saying optimization discussions aren't needed on how to best handle certain structures, use certain birds well, or how to do maximum damage to a Boss. But specific walkthroughs on non-boss levels seem entirely pointless to me, as the levels rarely look similar twice. Does anyone else really get insight from them?In that sense I guess I AM saying I don't really care for the "lives" system, because things are way too random across the board, sometimes resulting in really, really hard level stages.Thanks, sutekh137