Android isn't about saving money, it's a better experience with a more open and universal experience. No need longer are you locked to one make of phone, android powers pretty much everything that matters that isn't apple.
Your content moves with you. Don't like this year's Samsung? Fine buy a HTC, a Sony an LG, a Motorola, a Nexus, a oneplus, a huawei, a lonovo, an xaiomi, a whatever....
Also you of course only buy your content the once, none of this apple buy once per device nonsense.