I think it's kinda sad when I get a mission to get 5 lvls (I'm lvl 648), knowing that it will give the same reward as a "click 250 times" misson, but it take many hours to get the levels and just seconds to do the clicks...
There were a bunch of places where you could choose to either sacrifice a bunch of clones or take a "remove" path without sacrificing any. I didn't think twice before seeing some blood.
LOL! I was afraid people may interpret it like that. The main idea was that Kimiko needed to stand up to her daughter, and words just weren't working. Also, I will admit that I'm an advocate for spanking. ;P Just kidding, but I do think that Kimiko's well-intended strategy to not spank contributed to her appearing weak in front of her daughter. However, she finds out that spanking would not have worked. Kazumi has structural issues in her brain that she cannot be talked nor spanked out of.
On my point of view, the saddest ending is the fifth, because there's nothing worst than see your daughter suffer the rest of your (and her) life without being able to do anything.
 "Idle Empire 3"){kind=icon}
 "Factory missions"){kind=icon}
 "Zomgies 2"){kind=icon}
 "Enchanted Heroes"){kind=icon}
 "Starlight 2"){kind=icon}
 "50 years (graphical)"){kind=icon}
 "Factory idle"){kind=icon}
 "Infinity Inc"){kind=icon}
 "Raiders took my dog"){kind=icon}
 "Save the Earth! - The Incremental -"){kind=icon}
 "The world most bugged game"){kind=icon}
 "Neon Rabbits"){kind=icon}
 "Cody's Nightmare Vacation"){kind=icon}
 "Raven Crime"){kind=icon}
 "Swords & Potions 2"){kind=icon}
 "Min Hero: Tower of Sages"){kind=icon}
 "Nowhere Safe 2"){kind=icon}
It's intended. You need to plan carefully the order of the researches to maximize your benefits. Buy it early to get the max RPS possible.