That's because Apple confirm which apps can go on the Store and which apps can't.
Android Market is a more free market and it allows developers to add they apps instantly. The person downloading the app should be responsible for downloading apps that aren't even rated.
You can download programs with viruses on Windows too, maybe not on Mac, but who cares? That's the beauty of being free to do what you want.
1) BMW E30 M3
2) Mazda MX-5 MK1
3) Dodge Viper
4) Toyota Soarer
5) BMW E39 (face-lift model)
6) BMW E36
7) BMW E21
8) BMW E28
9) Lotus Elise
10) Toyota Corolla AE86
Something similar happened to my dad. There was a women driver in front on the phone, driving slow because the bus in front was emitting lots of black smoke. So my dad decided to take over, and as he started taking over, she floors the gas causing my dad to nearly crash into the car in front, then brakes and laughs.