I have the same feelings about Aikido. Truly I believe that any discipline that gets you moving and responding to people will provide you that benefit I was trying to describe.

I disagree that Aikido is mainly weapons defense: the weapons teach body position.and timing. Aikido is about multiple attackers, never being overly focused on the challenger in front but always ready to engage the danger at your flank and to the rear.

I am sure you will find the discipline that propels you forward (whether Aikido, a hybrid, or another art). I hear everyone goes through a stage of questioning once they reach a level of competence. There's much more to discover.