1. The energy "wastage" being complained about is not dependant on bitcoin usage, it's dependant on the subsidy and fees. If bitcoin would be used worldwide, the energy used wouldn't increase linearly with usage. You seem to be assuming it would.
2. Why will energy costs continue to rise? If it becomes less profitable to mine, less mining happens, and less energy is used. This has happened in the past, when the price dropped.
3. Why are companies using off-chain transactions? It's faster for same-company transfers. In a sense, many banks are using "off dollar" transactions as well, not actual dollars. Sending bitcoin is still faster than sending money.
There are plenty of problems bitcoin solves. Just look at all the big-name companies using it, like NASDAQ, for example.
2. Why will energy costs continue to rise? If it becomes less profitable to mine, less mining happens, and less energy is used. This has happened in the past, when the price dropped.
3. Why are companies using off-chain transactions? It's faster for same-company transfers. In a sense, many banks are using "off dollar" transactions as well, not actual dollars. Sending bitcoin is still faster than sending money.
There are plenty of problems bitcoin solves. Just look at all the big-name companies using it, like NASDAQ, for example.