Yes it is worth seeing. In the movie theatre. Once. Don't buy it. I saw for the second time last night. It was extremely less enjoyable. The stunts that Tom Cruise preformed were great. It was a great action film. The plot didn't make that much sense but was predictable. The acting wasn't good. If you want emotion that doesn't rely on violins then, don't watch this. IF you want a plot, don't watch this. It makes sense in that it's an action film.
As an action film it is ok. It's worth seeing once, not twice. Don't buy it, just watch it. If you watch it a second, the parts that are supposed to be fun look extremely forced and it's really awkward.