If units were difficult to obtain or had a larger influence on your total stats, then I could understand your concern. But I'm guessing you have a pretty high att/def and losing 3m is not going to change much. Also, what is your IPH and how quickly can you regain that 3m loss?
I like that it keeps the game flowing. If you stop playing, your units will get chewed up and your stats drop. If you constantly collect buildings and use money to buy units, you will be fine.
Many are complaining but I think Gree made the game more fair with these changes.