In a rare case for anything WWE-related, the ending of The Undertaker's 21-0 winning streak at Wrestlemania seemed genuinely unexpected. Headlines were made around the world, Twitter trends lasted for days, and the audible cry from the audience when the referee's hand hit the mat for the 3rd time, all of it just went to show how shocked people were that Brock Lesnar had defeated The Deadman at Wrestlemania. Even now, weeks later, the dust still hasn't truly settled on the event. The Undertaker hasn't even been seen on WWE programming since Wrestlemania, while Lesnar has only appeared once. It's almost as if even the WWE are in as much of a state of confusion as we are over the whole thing, and questions are starting to be asked. Was that the last we'll see of The Undertaker? Will he ever wrestle again? Will there be a rematch? What will Wrestlemania 31 be like if Undertaker isn't there? Fortunately, there's plenty of reasons why we will (hopefully) be seeing Mark Calaway in the ring again, because it would be just plain wrong to rule out a return from The Demon of Death Valley. Here's a look at the 10 most likely reasons to see The Undertaker wrestle again.