Interesting question and I dare say that the answer depends a lot on your age.
Young people do not expect to die and as a result hold on to hopes of an extension of a spiritual kind or re-incarnation.
As one gets older, a permanent sleep gets more attractive.
Buddhism is more attractive than the conventional western beliefs and certainly pre-dates Christianity and Islam. It's survival I am sure is because of it's broad acceptance of all other religions. So, one can still be a buddhist and any other faith.
Basically, they believe that absolutely everything has a spirit,( or energy ). and that we should respect that spirit. Science shows that all matter does have an energy too. So in a naive way it embraces everything.
As for re-incarnation. Without full choice in the matter, it would be risky. There are a certainly a lot of places in the world I would not like to be re-born in. As for the future, that could be a scary thought too.
I think I will settle for eternal sleep as a personal choice.