From what I've seen in the martial arts world. At one time grappling was viewed with skepticism. Lots of people thought striking arts were more effective than grappling arts because a striker could knock out a grappler. Then in the 90s, due to people such as the Gracies, grappling became very big. A good grappler was shown to be able to tie a striker up and neutralize their striking ability as the Gracies did very effectively. Now MMA is very big. MMA or Mixed Martial Arts combines the two. The way I see it, every style has their strengths and weaknesses. MMA is really good in that it makes you well rounded, you learn how to strike and grapple and how to combine it. but a weakness I see in MMA is that you can spread yourself too thin and become a "jack of all trades master of none." So, personally I think MMA is good if you already have experience in other martial arts. If you already have a good background in a striking art and a grappling art and you want to combine them.