I am not sure why the "sad" comment, but, it IS sad that we have to protect our gear in that way. I too will either carry it or lock it using a cable lock if I am not in site of my bike. There have been a few exceptions and, luckily nothing was stolen.
Society has "forced" many of us to be somewhat paranoid. Once I was in a sandwich shop with my convertible top down. I had left a magazine on my passenger seat. After finishing lunch, I was in the bathroom at the rear (no rear exit) and the window was opened so I heard someone outside standing by my car commenting about the magazine and the neat article it had on the cover. Didn't think much about it. Finished up, went outside and the damned magazine was gone!
Sheesh! The things people do!
So, I agree with your choice, cheap or not!