Yeah I JUST started LOTRO because I was bored of WoW, and although it's incredibly similar to WoW, it's mostly in controls and the GUI, not so much the actual content.
So for me at least, it's familiar and easy to grasp, but it still is different enough to peak my interests. It also has some really cool features that aren't available in WoW. (You can set your family tree, you can write a character bio in game, you can buy a house, etc.)
Not only that, but if you try it and like it, you can pay a one time flat fee and get a lifetime subscription to the game, and never have to pay ever again, even for expansions. Your characters/account will never be deleted. (Depending on where you live, the lifetime fee changes, but it is 299.00$ US/367.00$ CD.