I think it's perfectly all right. In fact practicing without martial intent will - in my view - reduce the art to mere dancing.
However - when you practice, you must remember that practicing aikido involves practicing with the right mind set as well. Don't just hit uke because you can, divert the power of the potential punch into technique, but be aware of the atemi present at all times. It IS a martial art, and practiced in the right spirit it will eventually get you to get involved in the spiritual side to at least some extend.
Mind you this is my opinion. Others might (and will) differ.