Does life ends so sudden?

I received an email reply from an architect..
"Dear.. Roberto has passed away.."

When I saw this, I was so shocked.. and I felt a sourness in my heart.. although I am not close to this man, we did talk regarding work and I did know him.. to know that somebody you knew passed away.. it's quite sad.. and it is so sudden.. it really is.. I just spoke to him about 2 weeks ago.. and that time he looks okay to me.. don't look sick or weak at all.. and I have cc him an email 2 days ago but was informed about his passing by this architect whom I emailed to.. I don't dare to ask how he died.. that's being too busybody already..

I still remembered him saying "it's nice to see pretty girl coming into office once in a while" and I felt so paiseh and just smiled back.. it's true that construction site seldom has girls around.. but hear it from someone whom I don't really know, it just feel weird.. but this person is now gone..

why can life end so suddenly.. it's so unpredictable..

somebody told me that we have to live life to the fullest and not drown ourselves in work.. life can be so short and we have to treasure it.. and also treasure the people around us..