Doesn’t sound silly to me; I’m also a terrible measurer. I’m quite good with all of the math and the planning, but once it’s putting materials to the saw, things start creeping and then it’s a constant game of adjusting to compensate for mistakes. It’s made worse because my dad suffers the same problem, so any project we work on together is doomed to start getting wonky on us.
I designed my current desk (quite cleverly, if I do say so myself) so that it could be built entirely out of a single piece of plywood. I mapped it out on paper, accounted for kerfs, and even mocked it up in sketchup to verify my design. And yet after all of that, it ended up a quarter inch lower than I’d intended because I couldn’t successfully cut my desk legs the same length on the first try. (headdesk)
So the more I can take myself out of the actual production process, the better.