Well, data is there. Whatever is your favorite model, it must accommodate data. Currently accepted paradigms reproduce all observations, which is why they are called standard. And their predictions are so far confirmed by any new observations (more or less; there are questions ;) ).

Therefore, if there is something beyond the current theories and that a new theory will have to be designed, this new theory will be well approximated by the current paradigms in their own range of validity (the differences usually appear when one starts to probe new energy regimes, pushing some frontiers further, etc...). For that reason, the current theories are very important and must be studied.