OOP and AOP are not mutually exclusive, the are complementary.
As for OO, there are certainly case where it's less apllicable. If there weren't all we would have is OO languages. For purely number crunching tasks, many people still prefer Fortran. Functional languages are useful when you're dealing with concurrency and parallelism.
Also when your app is mainly just a database with a GUI over it (like a CRM app, for instance) OO isn't very useful, even though you might use an OO language to build it.
