Not always Evan! I still haven't finished the PTO Avenger, the big Hunter, the 'fire dump' Spit plus about 8 more which just need 'finishing touches'!!!
At the moment, I have the Beaufighter, Boston, and Tempest going, plus a few repair and modify jobs.
True mate.... in my case though I really do need to concentrate on getting some finished off before starting more. As Ivett tells me, my problem is I always want them to be 'perfect', and bog myself down in the detailing...