Let me put my part into this discussion
I`ve got the same thing going on I`ve got so mouch unfinished kits that I can`t count them anymore and usually it are those small things that I have to do
or the last paintjob, Some weathering put some extra details on it. And just before I get to that stage I start something else and those tiny jobs go onto the shelf or in the box waiting for a long long time to get finished.
For instance I`ve got a sherman that is waiting for the last weathering stage and he is doing that for almost three years now.
The same thing is with my Hummel, My 1:09 Zundapp with driver (I only have to add the bags on the side of the motor and I have to paint the camo on the leftarm of the driver.
I still have A stug 40f waiting on the paintjob.
And I already started the next project making the church of St. Mere Eglise with parachutist.
And believe me I have got enough kits unfinished to have some good months of modeling If I could only find some time between my new projects :-) :-)