Hmmm...the only "project" I ever chucked in the trash was Academy's wee C-5A Galaxy.
After cutting some pieces from the sprues and doing a minute or two of dry-fitting, I came to the conclusion that it just wasn't going to be worth the effort, so I picked out what I thought would be useful for the spare parts box and literally chucked the rest into the trash can.
I could just see hours of heartache packed into that tiny kit; hours that I just wasn't willing to commit to such a tiny Galaxy.
Now, Otaki's big 1/144 kit might warrant such an investment of blood, sweat, and tears!