The are likely many reasons you could use this technique. However, it is not something I would actively encourage. Rather, it is interesting to know, and a tool to have in your arsenal for when absolutely needed.
I'm sharing this not because I think you should use it, but rather because it simply made me think - wow, that's a pretty cool way of using a feature I use all the time, but had never thought to use it in this way.
Hopefully you will find this technique interesting as well.