sopranos series finale ending

Sopranos finale – what do you think happened?
Just watched whole series and assumed the ending meant that life goes on, Tony will always live in dread of something happening and that the life of a mobster can be mundane.
Now I hear that the screen went black because Tony was shot in the back of the head by the guy in the diner who goes into the bathroom.
Seems very ambiguous – what do other Soprano tragics think?
What I love about it is that it’s open to interpretation; some people think Tony was killed, some think Meadow was killed etc etc.
Personally, I think nothing happened and life went on as usual with Tony having to watch his back with everything he does.
Please Leave your comments as to what you think happened?