No but it is a good way to make NP. If you are level 50 you can make 50k - 70k a day possibly more. I would not doubt with AoB that someone will find a way to cheat.
It's never against the rules to play habitarium 24/7. As long as you're just letting it open and you're not using any cheating program. That's the mechanic of the game. If you won't let it open for long hours, you can't level up fast. It's fun playing though kinda long to level up. ^_^