If android will be exposed to threats that I would need an anti virus program to protect myself, then it would be the time I resign myself that I would be buying an Apple product despite everything I hate about Apple. The way I see it, it's the OS developer (in this case Google) to maintain security of their product.
I don't like companies who depend on the threat to stay in business. It is not in their best interest to completely eradicate the threat.
Happy New Year!!!