New Indiana Jones movie---very disappointed!?

I saw it last night and was not pleased. I won't give outright spoilers but I'll say this---I liked the other movies because they were fun, full of adventure and didn't take themselves too seriously. They stretched the boundries of history and had us suspend our disbelief; but they did it skillfully. This movie just constantly missed the mark. Yeah, there was some cool stuff I guess but all in all, I felt cheated and now the rest of the series feels a bit tainted. The ultimate ending and indeed the whole concept of the movie had me rolling my eyes farther than I thought possible. Your thoughts?