ahhhh line dances. They remind me of summer camps and being a kid.
I was a camp councellor back in the day. Line dancing was a way of getting all the kiddos involved without having to touch anyone :-P. I loved showing the kids that they could have a good time without grinding on each other the way the "grown-ups" did on tv.
As a muslim I try to avoid music when possible unless it is instrument-less. But that doesn't mean I don't dance... I still love to cut a rug, but mostly when no one is looking (or just some of my close friends :-).
Line dancing is one of those things that will always remind me of my "youth" and "back in the day." It makes me remember being a leader, and making stupid mistakes in my life, and growing up and being responsible. It reminds me of spending time with my mom and dad and friends from my childhood. It also reminds me of the effect of music on people and why it is something that is better avoided**.
Also did you know that line dances are cross cultural?? Once I watched a video of a Arab Gulf wedding and the men were doing a "traditional dance" which I swear was exactly the same as the electric slide. You see them everywhere! They are community dances that include everyone and allow you to keep your personal space a the same time. Awesome.
** Note: I'm not bringing this up so we can have a discussion on whether you think music is halal or haraam. I am of the opinion that it is something in a grey area that people argue about so it is better to avoid it because it leads to haram.