I am super new to cryptocurrency but I heard that the ATM in Wan Chai can also buy ETH. I will definitely give it a try.
For people like me who doesn't have much money to invest on cryptos, bitcoin ATMs are a good choice despite its premium (5-10%). Think about people who are just investing $1k HKD... The bank + exchange charges are way way higher than 5-10%!!
Bitcoin ATM has its value to exist. Don't forget that buying bitcoin through ATM is anonymous as well.