I am not doing woodworking though? Privately I do 3D Printing.

This here I would also use at my job whera I am a bit of a Jack of all trades so once a quarter I need to sketch some model of something to see if it would fit or not. Example would be right now i need to sketch a simple collision protection for a outdoor cable tray (for Solar Pannel Strings). Gonna not take me longer than an hour. I do not use it enough to justify spending 40 Bucks a Month 4 times a year.

Ah, cool. Never mind then :)

Its just that often times, even us programmers seem reticent to pay for software even though we happily throw dollars across the counter for a sugary coffee somewhere.

I know of sketch up primarily from DYI magazines, hence the assumption.

It's true that tools and materials are expensive with woodworking, but I end up designing a new piece of furniture (pretty much variations on a box) maybe 1-2 times a quarter. I'd much prefer using a native desktop application over the clunky web-based Sketchup UI, but at ~$33/mo it just doesn't provide enough value to me as a hobbyist.

KetchUp/BenchUp seems promising -- I was able to import a file from Sketchup Free and navigate around, but the polish just isn't quite there yet. This should improve quickly I think.