I have an addictive personality that I'm highly aware of, so when it comes to things that combine fun with spending money, I tend to steer clear, out of fear of going in with everything and coming out with nothing.
I'm not criticizing the game. I assume it's a productive hobby for many who get what they want out of it in ways that are satisfying.
Spend money, but get an income stream at the same time actually. A SIM income has a good return.
Is it time consuming?
I spend between 5 min ~ 20 min a day or so.