I have most of mine on an exchange because I'm getting paid interest. Has there ever been a time when an exchange like Binance for example, steals your funds or gets hacked and people lost money?
I think it is safe and more advantage if you store it in a most reputable exchange like binance and houbi you know that there is a lot of new exchange and it is a big problem if you store it in new exchange because you dont know if the particular exchange is scam or not, so i suggest to store on proven and tested exchange. Storing your crypto on exchange for interest is good idea keep storing and goodluck.