Sorry, I found the inside of Neuschanstein very interesting, from the ornate carved wood bed to the living room with it's references to Wagner operas.
Of the other castles in Bavaria, I've been to three - the Residenz, Nyphenburg, and Herrenchiemsee - and none of these holds a candle to Neuschwanstein.
Residenz - the only thing I can say was I was happiest when I finally got out of it. You can only see so many Rococo rooms and old pottery before you are screeming, "enough". Yes, you can spend hours in it, but you'll be sorry.
Nyphenburg - probably the best of the three, but the tour of the interior tour is refreshingly brief. The best thing about Nymphenburg is the grounds and the out buildings.
Herrenchiemsee - the worst of the bunch. If Neuschwanstein is criticized for the effort it takes to get there, Herrenchiemsee is equally difficult, and all you see there is a partial replica of a French palace. The tour of the interior is out of proportions to the time it takes to get there.
Yes, Neuschwanstein is being loved to death, but that's not a reason not to go there. It reminds me of the saying, "No one goes there, it's too crowded."