It's pretty easy to just re-do your poster with an entirely different content and not have to worry much about layout. For somebody who may be uncomfortable wit

It's pretty easy to just re-do your poster with an entirely different content and not have to worry much about layout. For somebody who may be uncomfortable with (expensive) GUIs for poster layout, which would force you to think about every little aspect of design and layout, a LaTeX template does a good job of just getting things done.