Half of the time my sims use the fabricator, it either beats them up or breaks. The former is actually pretty funny, especially the moodlet sims get afterwards, but it gets old fast. When a high-level sim who should have a better grip on that machine spends hours working on a double bed, just for the machine to screw up last minute and leave them with nothing, it's just frustrating, even more so than high-level robot engineers never learning to not hammer themselves in the head all the time.

As I said, it can be funny and I wouldn't want it removed from the game, just toned down so it doesn't happen so often. Almost everything else in the pack can be upgraded to be more useful and/or less likely to break, so why not the fabricator, too?