SEPA Instant works pretty well, but you can't compare it with crypto. You have to 100% trust banks and governments.

I think Bitcoin and other mined cryptos can be made more energy efficient in other ways, I'm sure smart people are working on it. Imagine if mining required some human work just like mining an ore, then you couldn't just stack thousands of miners in a warehouse with 2 people to take care of it, you would need more and more people, and that would limit the number of miners.