I agree with Buka about the importance of the spiritual side of martial arts, even for people who may or may not be spiritual in general, I learned alot from my first sensei when I was 5 learning shotokan, I learned the importance of honesty,self control,dedication, and also self esteem. Those lessons stuck with me for life. If you are going to teach how to punch you should also teach how to heal, and how to avoid physical altercations. Tony hit the nail on the head as far as what I was going for "well rounded" and I also agree with king fu wang if you spread your training too thin you will not be great at one thing just mediocre at everything. Most arts are complete anyways I learned grappling when doing kenpo karate and I learned basic striking and striking defense in jiu jitsu. It's the journey that matters most.