Realistically.
(Why to lighten up the party there, Bob...

)
I was thinking a heart attack, but I think that's a bit less now. Still possible though, heart disease of some kind, ending up in a heart attack.
After that I was thinking a cold or flu could actually knock me out. Something like that that turns into pneumonia. The cough that never goes away and slowly gets worse. Until it takes over. Something taking over the lungs like that.
Getting hit by a car. Stupid or random accident like that.
And then something like cancer or a tumor. Live long enough, the body can't keep up with the repairs and then something like that happens.
Less likely diabetes.
Or something like Alzheimer's... I saw a TED talk with a chart that showed the risk factors... It was basically 100% after something like 80 years old.
Just thinking.
What about you? What's going to kill you in the future? Realistically. About a year ago I saw a lot of 'top 10 realistic reasons for your death' and started thinking about it more.
If there a lot of teens on the site, they probably won't care.
I'm thinking too... If there are so many people on the site... Someone must have died off. It's just statistics at some point. Oh! Haha. Tim. I forgot about Tim. Haha. There must be more though. They would just stop posting and no one will notice much.