If you are leaving while still well short of your 'Old Age Pension' date then it may be worth pointing out you might not live forever. Commuted money is in the bank, and after death the wife gets 50% of the pension plus the benefit of anything you may not have blown from the lump sum. I am still flying and have passed the 55th birthday, but I have no regrets about grabbing all I could get on leaving at 38.
Ray