I think many people are against MMA for a few reasons.
I think the first is that people are judgeing MMA soley by what some people in the UFC and other federations are doing, these people are highly paid athletes and it sad that the sport gets blamed for the mistakes they make. (no one blames basketball or football or baseball for steriod abuse or rape)
second I think that to many people are aren't forming there own opinions about MMA, they are going off of what their master's basis, many times it's hard to not listen to what your master has to say.
and lastly I think that many people don't like it because it is new and it seems that no martial art was liked when it was new
what does everyone else think
The following is just my opinion. I think that a very large portion of the non martial arts public is clueless as to anything MA related, in addition to what they claim to supposedly know, not being 100% accurate either. What people fail to understand is the martial arts has contact, and it has a very rough side to it as well. I've been training for 20+yrs, and I've seen many people cringe at the thought of anything violent. Violent can range from hitting someone harder than a tap, biting, groin shots, eye shots, etc. IMO, the arts were created for SD. Sadly today, thats not always the focus and people are afraid of contact any harder than a fly landing on them.
How does this relate to MMA? You have people who view MMA as 2 bloodthristy guys beating the living **** out of each other. This simply isn't the case, and if we were to compare early UFCs, to what we see today, we should see 2 different events. The fighter safety is much greater than what we used to see. I can recall many times where people complained that the fights were stopped too soon, and who knows, maybe they were, but compared to early fights, its very different.
As for people listening/not listening to what their "Master" tells them....I listen to what my teachers have to say, however, I form my own opinions on things. This isn't some cult. If one of my teachers doesn't care for MMA (which BTW, they all like it

) then thats fine...what I do, on my own, in my own house, is my business. Tradition or not, the day that one of my teachers tries to dictate my life, is the day that I no longer train at that school.
IMHO, I think that MMA is a good thing...to a point. Let me explain. Its good because I feel that it opened the eyes of alot of people. People who thought their art was complete, were taken by surprise, when they realized they were like a fish out of water once they got taken down. And yes, I know, people talk about eye gouges, etc, but while those are good tools, I feel that those are not or should not be the only answers. Why? Because people feel thats their plan b, but when b fails and they dont have a c, d, or e, then what?
I feel that its bad, and I suppose we could use the "1 bad apple spoiles the bunch" saying, in that many MMA people feel that what they do is the end all, be all of training. Again, not only is this not the case, but it makes ALL MMA people look bad, in addition to giving a sour taste to the traditional people.