I'm still not sure what the value proposition is supposed to be for me, as a consumer. In one pocket I have my credit and debit cards. In the other pocket I hav

I'm still not sure what the value proposition is supposed to be for me, as a consumer. In one pocket I have my credit and debit cards. In the other pocket I have my mobile phone. Unlike my phone, my credit and debit cards never run out of batteries. Why do I want to replace one with the other?