Secondly, I think that aikido has a lot to offer everyone. Most martial arts are all about being the 'best', while aikido challenges us to be 'better' and allows us to define what that means.
The added emphasis is mine, and I added it because it hasn't been the case in my experience, which is mostly in other Japanese martial arts. It seems to me that the notion of persistent effort and improvement is pretty deeply ingrained in Japanese culture, and that is by and large reflected in martial arts practice. Unfortunately, many aikidoka don't see this, perhaps because they lack the experience in other styles...and, unfortunately, because some people within aikido are serving koolade in the form of the notion that aikido alone is the repository of various virtues. Always beware when someone tries to convince you of the superiority of your chosen path: when someone is telling you what you want to hear, there's an agenda at work.