Fragile life reminder

Everything that happened this very day was so fine you'd think it was a perfect day. From the glorious food to the craziest laughters... Death would have never crossed your little mind. You were quite happy 'cause it's finally time to go home and the aroma of sweet smelling dinner awaits.... You came near a junction and many... many crowded there and you wonder what lies ahead. You know for sure it was an accident. The traffic police was there to direct the traffic as cars crawl slowly crossing the 'cross-junction'. Approaching nearer and nearer to the scene, you saw loads and loads of glass shatters, there were motorcycles around and cars align at the opposite road. You decided you've never witness such a tragedy before and without second thoughts poke your nose to the window and try to take a glimpse of the chaos happening out there.

But you instantly regretted your own keen-ness to over look the scene. Your bare eyes saw this:
A woman sitting by the curb crying and hugging a guys leg while the guy looked expressionless at the same time stern. Next, more people crowd over the other side of the road. Then, the most horrible of all things in an accident you did not prepare the faintless heart to see-A lifeless body! He was facing your direction and you saw it all... he was lying motionless by the side of the curb with blood covered all over his head and face... he still had his helmet on and wearing a florescent green jacket! You got a shock of your life! Your brain became blank for a moment...

So he must have some vehicle collide onto him and he got thrown or something. Whoever causes this, are they just blind or it was plainly unavoided? Why did this have to happen? Why can't people be more careful on the road? Don't you people realise that life is priceless? Accidents happen just like that. How would he have known that he's life cannot last untill the end of age? How would he have known that right then and there he lost his life forever?