I just came across a really interesting poll collected by The US News and World Report in 1997 about who will get into heaven and why.
One question is: Which do you think will count more toward getting into heaven...good deeds and moral behavior or religious faith and observance? (U.S. News & World Report Poll, Mar, 1997)
51% Good deeds and moral behavior
28% Religious faith and observance
13% Both or depends (vol.)
6% Neither or other (vol.)
I'm surprised that more people didn't choose both...