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 ?
I believe that many of these are born for speculative purposes and therefore I advise you to be careful, it is also true that I have read something about it in anticipation of ETH2... I don't know but I don't like the idea.
We need to be well aware of every coin we invest in crypto doman. DYOR and then invest in project of your choice. AFAIK, deflationary cons are new and well take some time. They will defiantly go up, we just need to be patient for that.