if i have stablecoins centralized is better to convert everything in decentralized stablecoins ?
Centralized cryptocoins (stablecoins included) comes with the similar risks that comes with any other centralized currency/banking systems! few of them are,
1. Your money can be locked/freezed
2. Regulators can get your ip details and what not
3. Your transactions can be reversed by the controlling authority if needed
4. You can't have 100% control over your own asset
Stablecoins doesn't come up with additional risks for originating from a centralized company! It's just similar to fiat money in your local banks! Simple!
If you are planning to do some big amount transactions which you don't want to justify to the tax authorities or enforcement agencies, it is better for you to convert to decentralized cryptocoins. Otherwise, it really makes no difference!