Well this is kind of off-topic, but using Bitcoin is actually beneficial... Let me explain:

1. As you all know physical cash is made out of materials like paper (I am not talking about digital cash which is stored in banks or on credit cards), to get that paper you actually have to cut trees, this is not that good for the environment, Bitcoin doesn't have any physical cash, it is stored digitally and you can use a Bitcoin wallet on a phone, a phone can be powered by solar panels or renewable energy.

2. Physical cash carries lots of bacteria, diseases, by using digital money you can prevent epidemics.

Of course I am talking about paper money, not money made from metals.