For some of us in the snow belt, when the days get long and the sun is warm, people are out and grass is growing, the world gets much too big to sit under a light bulb detailing a 1-inch engine.
The 1:1 projects are like a physical work out. That is, it can be hard to muster the energy to start, but once you're under way the momentum turns it into a rewarding evening. Just gotta push through the initial start up.