I've been listening to the "25" CD on my commute into work. The more I listen to it, the better it gets. I think if Adele takes care of her voice, and does not always sing at the top of her register, she will be an important artist for the next decade.
I think Adele might stick around for another decade. With the way she kept on making emotion moving music that we can all connect to. She would last unlike some other artists who can only sing songs that literally just hurt our ears.
I love her voice. For her songs I like some of them but I cannot say I am crazy about any of these songs but it is far from sucking or being awful. As for her I do not hate her just like I do not love her.