you agree?
I paragraph - Make an introduction/state the problem.
Since the time immemorial.../For centuries...people have been arguing.../thinking about.../struggling for... /
For years the problem of ... has been one of the most serious.
It has been widely discussed in recent years whether... or not.
People have always wanted...
Today we still... (This problem) is/are getting more and more...
Some people believe/argue/claim... that ..., while others think/believe/argue...