Aikido is my favourite martial art, I used to practice on my own too, but you do need an Uke at some point and to be one to practice your break falls. Boxing is more competitive which was not Ueshiba's intention for Aikido, even though Kenji Tomiki developed his style into just that. I studied in the Shin shin toitsu do style (Koichi Tohei) or Ki aikido until the school burned down. I have written an article on Aikido I will be posting on the front of the site and have a pre made thread ready for it to be linked to. Keep your eyes open for it in the near future.