Basics- To do or not to do?

I know long division is fading fast, but I feel my students need to know this concept to ensure success in future grade levels.  I always struggle with whether to teach this skill or simply rely on a calculator.  I know students should be able to do this skill when they get to fifth grade, but they cannot.  I know my parents want their students to know how to do this without a calculator.  What do you think?