I have always believed wireframing tools were too rigid to let you be creative. And so I’ve always been a pen and paper sketcher and I like the drawing part of it. It’s fun and it can be very creative.
But where it doesn’t help is in when you’re trying to design to a higher level of precision. I have started using Balsamiq and I was impressed with how limitless and simple it is. Everything works as you’d expect it to, and in an hour I had a much clearer idea of what the ui I had sketched out could look like. Things like portions and relative size to other objects on the page are much easier to see.