The Sadducces' skepticism was because of their
ignorance of the power of God.

Certainly life in the world to come will not be
less rich than that of today.

The life to come will be beyond our fondest hopes
1 Corinthians 2:9 "But as it is written, Eye hath
not seen, nor ear heard, neither have entered
into the heart of man, the things which God hath
prepared for them that love him."