Americans can't live without their coffee and smartphones.  A group of one-thousand men and women were asked which part of their lives they would be least willing to give up, with the options of coffee, smartphones, alcohol and sex.   Twenty-nine-percent of respondents said coffee and 28-percent said smartphones.  Alcohol and sex were considered less important, with only 23-percent and 12-percent of respondents, respectively, unwilling to part with them.  Only five-percent of women said that they'd be unwilling to give up sex for a week, compared to 20-percent of men.  On the other hand, men seem to be less dependent on technology than women.  Thirty-four-percent of women said their smartphone would be hardest to let go of, compared to 21-percent of men.