Analagy: If I am not attacked I won't need to learn how to fight. But if I learn how to fight, I will surely be attacked.
Aikido works because you are in the right place at the right time, which makes doing a technique easy. Change or adjustment to a situation, is not only good Aikido, but a result of cross training and knowledge from experience.
Get more experience, and you will see the credibility of Aikido.