I'm dying to know... when you use the term "martial art," what specifically do you mean?
Modern usage of the term is fairly broad, seemingly encompassing almost anything with a belt.
I use the term in conversation to denote fighting arts, regardless of national or cultural origin, that have a practical application (self defense, defense of others, etc.) and which may or may not have a sportive aspect.
Consider that the word 'martial' is being applied in a very broad sense. It has shifted from a meaning related to military arts to simply fighting, be it in defense of one's own life or in a sporting envirionment.
Art is being used, generally, to denote that it is a system or a craft rather than used in the sense of fine arts (painting, sculpture, etc.). I do not agree with people attaching the fine art connotation to martial arts.
I have stated before that I really dislike the term, "martial artsist" and I am frankly not overly fond of the application of the term martial art to many 'arts' that are traditionally or popularly associated with the term martial arts, though I do not dislike the term itself.
I prefer to use the term fighting system. However, martial arts is a part of the vocabulary and when I use the term, people know what I am talking about.
Many "martial" arts that are currently practiced have little practical application on and/or are not trained in such a way as to be useful on a battlefield of any era, including battlefields in time periods before firearms were the primary weapon, thus the reason for my preference of the term fighting systems or fighting arts.
Boxing, Judo, BJJ, kickboxing, Shotokan, Tai Chi (as popularly practiced in the west today) are all fine systems to practice and have manifold benefits for their students. They would also,
as practiced in most schools today, have little to no application on a pre-industrial age, twentieth century, and modern battlefield.
Kendo is drawn from kenjutsu, but is geared towards a duel between two swordsmen and has been narrowly focused on sport/competition.
Fencing, as in what is regulated by the FIE, is based around civilian dueling weapons that were not a part of military usage.
So in the sense of applicability to warfare, neither is a 'martial' art in the strict technical sense.
In the current age of warfare, the riffle is the primary weapon of the soldier. Some kind of unarmed fighting is still needed in modern warfare. Like the samurai or the knight, unarmed fighting on the battlefield is considered a last resort.
The relative peace enjoyed in most of the developed world, and the very clear delineation between military and civilian fighting is such that the term martial art has come to represent fighting arts in general. And I am okay with that, though internally, I do make a distinction.
As for the martial sport question that you asked on page one, Steve, I draw a distinction, though not necesarilly the same one that everyone else draws.
Martial sports that are trained in for competion
only are sports. Boxing, wrestling, fencing, sumo, BJJ, judo, kickboxing, taekkyeon, and certainly others, are sports. Yes, they have practical applications outside of the ring.
Kendo straddles the line and I do not include it
only because it has kata that allow it to encompass more than just the shiai sparring and it has a very strong 'do element. Practically however, it is pretty much sport.
Martial arts with a sportive aspect, such as taekwondo and many karate styles, are primarily fighting systems that make use of sport to provide a safe environment to 'fight' against a resisting opponent. But they encompass a great deal that falls outside of the sporting realm (though WTF sport TKD is so divorced from the greater taekwondo system as to almost be a separate entity and most definitly a sport).
I see MMA as a rule set, though if you are training specifically for MMA matches without training in the donor arts specifically, then you are training in a form of sport fighting.
Please note that I do not see the term sport as bad or demeaning. Most competitive (meaning
actually competing regularly and consistently) athletes train harder than most so called martial artists and could likely pulverize most so called martial artists in an actual fight. Very likely, they also have a higher chance of survival in a violent encounter as well, likely even against armed attackers, as they will not have any false confidence in their abilities against an attacker with gun or a knife, something that many so-called martial artists suffer from.
Daniel