Actually I'll rate android over iOS any time and day. The biggest upside android has over iOS is that it is open source however sadly every day that passes, as android progresses it seems to be getting less open source. Even if these updates are important they may not be effective if you are a careless user especially in terms of visiting random sites.

I've seen a few persons who make use of old rooted devices and still hasn't had a single spyware or hack issue for a couple years.