without a doubt it is worth it..Dont let the naysayers convince you otherwise..
if you are into integrating tv/your media/the internet, then this is the best way to do it right now,
It should be an optional fee. There is some functionality that you will not have unless you pay for it (like it can't search the recordings on your DVR and a couple other things) but it is at your option whether you choose to continue to pay that fee or not. You might want to consider paying it for one month and see whether or not you think the features it enables are justified. If not then simply chat/call in and have it removed.