If I was concerned about power and the ability t handle someone who was attacking me with intent to do harm I wold buy a go and spend my time learning how to use it. It is not why I study aikido. And seeing Ueshiba's power in videos is also not why I came to aikio. My choice to take up aikio had nothing to do with wanting to learn to kick ass or become powerful or to defeat a attacker. That is just what it is. That said. I'm not really afraid of the power I have gained or that which I will gain as I continue to train. The power is just a side effect of my training which is for an entirely differnt purpose which I am happy to say I am slowly beginning to accomplish.
So I think that as Mary pointed out you first need to drop the assumption that everyone is training in aikido for the same reason that you are.
Reading the classics does tend to incite me to do some pretty deep thinking on aikido and life and my own internal struggles as well.