Everyone's opinion on this will vary of course but here's mine. My wife and I went to the Very Merry Christmas thing for the first time aprox. 5 years ago We enjoyed it quite a bit so the next year we did it again, same time of year (probably same week even, first week of December). The crowds were terrible, as if they oversold tickets or something. We didn't really enjoy ourselves so we skipped it until last year and said ok, let's give it a go again. Forget it, we were there maybe 2 hours and bailed. The crowds were simply too much, again, IMO. Some people aren't affected by crowds so it may not matter, just being there is enough. In that regard, sure, the decorations and such are very nice. The cookies, hot chocolate etc are also nice but it is kind of like going during the day, but it is dark. I just don't see giving them extra money to basically stay at night certain nights for cookies and hot chocolate worth it to not have a more pleasurable experience but to each their own.
We enjoy going to Hollywood Studios and seeing the lights much more and it's included in the general admission. Shame if it is in fact ending.