Re: In a quandary
I'll go along with others saying that aikido can be used effectively in self-defense, but perhaps the self-defense you're looking for is not part of the standard routine at your dojo. If you see something missing in what you are learning, there's nothing wrong with looking outside the dojo. If you don't want to make a long-term commitment of time and money to another martial art, you could enroll in a self-defense course.
I, for one, find aikido (at least as it is taught at my dojo) to be less of a workout than I want my martial arts training to be, so I train in taekwondo on the side.
If aikido is important to you, but you feel you are missing something as a martial artist, find a way to supplement your training. It may, in the long run, make your aikido better.