Even though blockchain was developed it has not been so long but trust me, it has been able to assist our daily actions

Blockchain was developed a long time ago but was not popular. The thing is that it gained popularity after the lunch of btc and its blockchain.

Transaction activities cannot be overturned

Yes, for some reason I sometimes see this to be as advantage. It only becomes a disadvantage when someone makes a wrong transaction.

It is because of this feature that is why we are calling for it it be used in the world so that fraudulent activities at our work places will be stopped .

Low levels of knowledge by users

Yes, this has stopped a lot of people because they feel it requires too much technicalities and they are not prepared to go through that stress.