^ Well dying of starvation isn't that slow. It'll last a week or something. Unless you end your life with a gun if you have one.
And that starvation period will usually be relatively short-term. Will you endure having a couple of steak-sized "Strange Meat" just to get over that period, and after that never resort to cannibalism again?
I'm speaking in relatives. Dying of starvation would almost certainly be quicker than dying of an untreatable neurological disorder.
As you pointed out, suicide could be the great equalizer between the two, allowing you to end it at a time and in a manner of your choosing. The problem is, with a neurological disorder, you might lose the ability to function before you decide to go through with it. Starvation, at least you will be able to end it at the end of your tolerance no matter what is going on.
No, I wouldn't endure having any 'Strange Meat' or anything else just to survive. Really just not who I am. Besides, if you know what to look for, there are plenty of things you can eat in the wild.
Granted, this is just speculation on my part and a decision being made outside of the situation I'm speaking of. If I was hungry enough, and in a situation where that was the only option, who knows? Maybe I would change my mind in order to survive. Couldn't really say; however, being well fed definitely doesn't make the idea of cannibalism agreeable.