Aside from geography, like having a meeting in McAllen, it is fairly simple to understand why state meeting attendance has so dramatically declined over the last 10 years.
Looking at my chapter, in 2011 we had 140 D1's, 61 D2's, 47 D3's, 45 D4's, and 45 D5's. With 41% of your membership in D1, and 59% in D1/D2, and no real incentive to attend the meetings (other than a few that want to continue to learn at that venue), why attend? D1's don't need the points. The state meetings really are not as enjoyable as they used to be, and we aren't all exactly swimming in money in this economy. Going to a clinic in McAllen would mean 90% of those going would probably have to stay overnight, adding to the cost. When I started, there was a much smaller percentage of officials in D1 than there is today and those points were important.
There are arguments that you have to have a wright-off anyway, and you should always continue learning to get better, etc. These are valid, but not so much so to overcome the fact that you can learn anything at your local meetings and training (if done correctly) that you can at the state meeting, and that for many of us, rehashing the same mechanics and rules you've been studying for 25 years has dulled your interest a bit.
My main objective each year before the beginning of the season is to get into the book and make sure I understand the new rules (which come out every two years now) and any new mechanics that might have come along. Both of those can be done in an hour. Really, why drive to McAllen? I'm not knocking the state meeting for those that like to attend, need points, need more education on basics, but for the seasoned guys, there just isn't much reason to attend. That will rub a lot of guys the wrong way, but that's the reality.