Stable coins is a payment alternative for regular payment options. There are already so much crypto currencies, especially stable coins that have absolutely no use case. It would be much better to finally develop a working altcoin.
You must not misinterpret it. the purpose of a stable coin is a coin whose price is basically stable on nerves. and the volume increases. indeed to measure the extent to which a coin is stable is rather difficult. but at least we can see in terms of graphics and turnaround in the market.