MS is not generally a fatal disease these days. Some may die of certain complications, but that is really rare now days. I don't recognize your screen name so I don't know if you are diagnosed or not, but if you are I hope that you get some hopeful answers in regards to treatment and emotional support.
now that's a strange question because you don't die from MS, you may die from complications of other issues caused by it, such as heart problems, but MS in itself does not kill you.
You sound very down, hopefully not and this is just a rhetorical question?