1. Gold was the answer until the most powerful organization in the world (the US army) decided it was too restrictive and outside its control. Everybody wants a money printer, and if you can enforce the world to use your fake money, why not do it?
2. The BTC market cap is21 million, its value is unlimited. When 1 Satoshi equals $1, that would cover about 4 times all the wealth in the world now. 21 million is plenty, don’t worry about it
3. Proof of work makes Bitcoin the most secure and the most efficient store of value ever. When you take into account the amount of electricity the banking system requires, it is much higher per dollar than Bitcoin. Bitcoin is final settlement in minutes and then secure for life. No buildings, no executives flying across the world, no air conditioning offices, etc. Visa does not do instant settlement, that’s why they seem so fast and efficient but they are not
4. More than 51% of the energy used to mine Bitcoin is clean. Just recently Tesla announced that they will mine Bitcoin from their solar power plant in Texas. Do you think the banking industry or Visa uses clean energy?
5. You seem to ignore the Lighting network which is orders of magnitude faster than Visa and way cheaper. Like Visa, it does not provide instant settlement either but for most purchases is secure enough

Recently, an institution sent $1 billion in BTC across the world, it took minutes and the total cost was less than $1. The electricity used for that transaction was less that the one I’m using to reply to you. Try to do that with your bank, it’ll take weeks and cost a small fortune. Bitcoin is the future, you can realize now or live in denial a little longer. Fiat money has been a flop and the US army can no longer defend it effectively. Welciome to the Bitcoin era