I am well aware of coins with controlled inflation like BTC, where a finite number of coins will be generated at a controlled rate. Very recently I came across deflationary tokens where coins are destroyed whenever a transaction is made and they will end at some time.
My question is what is the purpose of creating such coins? Are they worthy enough to be invested ?
As for me, a rather specific concept. If you do not touch on some other "features", a key feature, it is also a disadvantage - a decrease in the money supply, which, with a noticeable volume of "burned" tokens, can lead to a forced increase in the price of objects that are sold for this cryptocurrency, due to immutability (and possibly and growth) mouth guard, and a decrease in available funds.
Sir, you are right. As far as my understanding of your comment goes, its like deflationary tokens have only one key feature i.e. decrease in supply and increase in price with it. We are standing at very early phase of deflationary coins and it will take some time before we can made some conclusion about them.