Is this why we need more immigrants?

Mr Nicholas Cowdery QC, highly respected Director of Public Prosecutions, is being forced to retire at age 65 against his wishes, because under government regulations he would lose his pension if he worked on. What a desperate waste! No doubt he will find other employment, probably in private industry where his remarkable talents will be put to good use for many more years. But he could just retire and live on his pension, swelling the ranks of those the government says need to be supported by the younger Australian working population. And that argument is used to justify the need for 300,000 immigrants each year.
Present retirement policies were set before the effect of modern health and welfare policies so dramatically increased our ability to work on beyond 65, yet we still have policies like this which force people like Mr Cowdery to leave his job long before his physical or mental age justifies it.
We really should be altering our employment and pension practices to positively encourage able bodied and willing senior citizens to go on working as long as they are able to contribute to our society.