Some biblical characters lived for hundreds of years. (eg. Methuselah lived to be 969.) However, people living now don't quite get that old. Aging is a mysterious process that is slowly killing everyone, and there are more than a few projects working on ways to avoid death. Immortality could be a blessing or a curse, and maybe someday we'll find out which it is.
If you'd like to read more awesome and interesting stuff, check out this unrelated (but not entirely random!) Techdirt post