This is a problem many games have. The inability to make a file for each person in your family. On a stationary system you can just use different memory cards. but you can't do that with a DS.
When you see the light at the end of the tunnel, the tunnel will collapse
More Bluntly... The light is a train
In English... Everything you work for will be taken from you
I am a pessimist...
It's better to be a pessimist, Because when the glass is half empty you get a refill!