Being spiritual does not mean being dead serious. If you allow life to happen within you exuberantly, unbridled, you will touch the spirit.
Yoga essentially means finding the keys to the nature of the existence.
If you evolve within you, there will be no pride, no prejudice. You will perform action out of pure, absolute sense.
Only if you are joyful, you can be free from the fruit of action.
Life is not outside of you. You are life.
If you do a yoga that does not change the patterns of energy within you, I would say, don't waste your time on it.