Not sure how Aikido has given you a sense of Death Nick, but perhaps that is another thread!!
For me it has given me a sense of completeness. The philosophy of Aikido fits very well with my own being and the harmony within the art helps to promote a sense of peace. Even when I am gasping for breath during a particularly hard class I feel at peace and surprisingly happy! (any other exercise I have done before did not give me a happy feeling to be honest!!)
Also, it has provided a sense of belonging. To a world wide family.