Yeah, I think I could; probably because I've never viewed suicide as something amoral, or cowardly. I figured that once your die, your perception of the world dies along with you, memories, feelings and all. You essentially cease to exist. From a personal standpoint, that doesn't sound so bad, you wouldn't even be able to regret it once it had been done; your capacity to think would be erased, and therefore, your capacity to care.
In this situation the whole moral dilemma of leaving behind loved ones is rendered moot. Presumably, they're already dead, already lost their stake in the world. This decision would be 100% about you. You could chose to kill yourself, and die on your own terms, while sparing yourself a bit of pain. Or you could just wait for death to come and find you.
I suppose either way, it doesn't matter much. In both cases you're rapidly approaching your death. Once everything's said and done it doesn't really matter how you got there -- to you the world might as well cease to exist altogether.
You know, having considered it. That same argument could be made for suicide at any point in one's life. -- "It's all going to end the same way, so why bother?" -- that's very interesting to me.