Nah, it's going to be a blast! I saw, and was transformed forever by the OT starting from age 4; was sorely dissapointed by TPM in the theater as an early 20's geek; then marginally dissapointed in AotC as a mid-20's geek; then kind of "meh." with traces of enthusiasm for RotS as a week-old new daddy. This time I'm taking my boys, who are just old enough now, and I think it's going to be a hell of a good time watching their excitement. Say what you will, but Lucas knows how to tell stories to kids - he's not BSing when he points out that there's a huge generational divide in fans. Those of us that grew up with the OT loathe the new trilogy, kids under 10 love the new films and the Clone Wars, weird but true. I couldn't wait to show my oldest ESB, and while he thought it was great, is more excited for RotJ and AotC, and will pick ANH last for kickball every time. Go figure. Anyways, can't wait to take them, but confused as hell about why LFL would choose to START with TPM, and let the hype die down by releasing one every year only. I mean, OT fans and kids will dish out for ANH, ESB, and RotJ in 3D, and I'm SURE would feel hooked along and need to complete the experience by shelling out for all 6 at the theater again (don't deny it - if you have any love for any of the films, you KNOW you'd be there - if only to see the things on a big screen again, with a hyped audience..."I feel the buried excitement within you, let go of your nerd hate!"). On the other hand, I think it's going to be a harder sell to get OT fans to commit to going to the PT films first, which may set a precedent for them ignoring the release in droves. Since Fox and LFL are saying that conversion of the remaining films rests on the financial success of the first release, it seems like a weird move.
On the topic of the 3D itself - I have pretty much faith in what they're doing. ILM has already put in at least a year working on TPM, with almost a year to go, with a stated objective of not throwing stuff out into the audience, but subtly creating a greater sense of DOF by pushing most stuff back into the screen.