Architects are mostly useless idiots. They will show you a lovely rendered version of your plans then charge you loads for any alterations. In fact they just spend 10 minutes tweaking their Sketchup model. Do an image search for "sketchup house models" to see what I mean.
And anyone can program - tweaking colours in HTML is easy!
Oh, wait. Programmers also do realtime systems and architects also design things like Falling Water. Do that on SketchUp.