I binged this game for 6 hours. I can't even tell what's so fun or engaging about it, it simply is. If you enjoy games like Viscera Cleanup Detail or enjoy menial labor for the sake of it, you'll love this game.
UPDATE: It's been a year. I still play this game regularly. Still don't understand why I love it. The free DLC is great, and the paid DLC is always worth it. I recently made enough to buy the moon base map with the cybertruck. Decorated it with cyberpunk items and numerous guns. I only wish I could cover it in blood stains like a VCD map, but maybe the workshop support will have my back.