My doubts are beyond the effectiveness of aikido. I do believe that aikido can be effective. However, I'm disappointed with the lack of uniformity and standardization to reach this proficiency across the dojos.
In my opinion, aikido is too recent and too small (in comparison to other martial arts like karate or judo) to have so many styles and flavours.
Just in Amsterdam there must be at least 10 different dojos with mostly small groups. This makes it quite difficult to train more than a couple of times a week (I tried combining training in different dojos and it didn't go so well). With so many teachers and students we could have a full-time dojo like the aikikai has in Tokyo and New York but instead practitioners are stuck with options that often don't offer more than two classes per week.
I imagine this diversity can be great when someone starts to be very experienced with aikido but let's face it, what's the proportion of practioners training for ten years or more?
Anyway don't let me start with the negative
I really enjoy the dojo where I train and I try to attend seminars in the weekend whenever I can. I just wish I could progress faster!