Aikido

Are you just looking for staying healthy or do you have self defense in mind? Have you considered giving Judo or Wrestling a shot? I ask, because Aikido is great if you're curious or just looking to stay active, but if you're looking to martial arts with the additional goal of finding a style that is practical and effective for self defense, competitive sports, etc., Judo and Wrestling benefit both from having not only a more cohesive and straightforward vocabulary of techniques, but the additional ability to practice competitively also allows you to develop familiarity and confidence in both the techniques as well as your own body. You live a lot closer to the region than I do, so while it was never an option for me, Sambo might be worth looking into as well, for the same reasons stated above.

Personally, I did Karate growing up, a little Judo in college, and finally Boxing as an adult, but that was disastrously short lived, which is a shame because I fell in love with it. If I had a chance to do it all over again, I would have stuck with Judo.

Also, this goes without saying, but please don't fight fight. We're all too good for that. :)