I've got about 9 on the go, in varying states of completion. Sometimes it's just finding the proper paint or waiting on decals that don't explode upon touching water, or waiting on parts, or, and this one takes up the most time, researching the interwebs to find exact detail pics to replicate in the subassemblies I'm working on.

Put it in its box, pull another one out, stay busy at the bench. Saul Goodman