Hello Tony!
I don't build models in other material.Only paper.
I guess it's because I like to "build" a model instead of just assemble it.But thats just my choice since I love to make 3d objects out of a 2d sheet of paper.And since the models are prepainted and sometimes weathered it suits me just fine since I'm colorblind and don't have a clue about colors!
I built a lot of plastic models when I was a kid as most of us guys have done.But after I turned 15-16 it was all over with that hobby....I guess other interest showed up
And now I'm 44 , and discovered the papermodels about two years ago , I was hooked at once