I like technical drawing since I'm a digital artist. Do you enjoy art? 
Yes I do actually, I often draw temporary drawings on a blackboard or whiteboard or just about anything.
Do you draw just for fun, or is it a hobby of yours?
I do it for both reasons I see drawing as a form of visual art in which I use various drawing devices to make my mark on either paper or another two-dimensional medium.
That's really cool. I like technical drawing because all the tools I could ever need are right there on my computer. I don't have to worry about expensive art supplies.
Yes I have heard of that, I know that technical drawings are essential for sharing ideas in many industries and in engineering such as drawing blueprints.
Technical drawing is very collaborative. It's great sending someone a piece and having their ideas expand upon it. I can make really diverse pieces that way. 
I know that only people who are professionals can do technical art work because it requires high precision so that the drawings can be easily understood.