Well, that depends.
Keep in mind that all releases, including whatever you are using now, have bugs or issues. That is the nature of all software. If you add up all those [valid] issues and look at them and compare them to all the [valid] issues on this release, is it any worse? Hard to say. Keep in mind my word "valid", there are lots of things in threads that are not confirmed, remain as problems from previous updates, are rare, or are not the fault of the update (for example- compatibility with apps, or a user's particular configuration or even misunderstanding of a change).
There are a LOT of very nice things about the JB update. It will be far better when some fixes come out. If you are comfortable and happy with what you have now, there is certainly nothing wrong with waiting. Nobody will chastise you (well, I certainly wouldn't).