Maybe not when you were cruising in the 80s, but here is a list of the lines that stop in Australia:

Princess, Celebrity, Seabourn, Carnival, Royal Caribbean, Cunard, Regent, Holland America, Viking, Oceania, Ponant, Silversea, Windstar, Azamara, Norwegian, P&O, MSC, and Disney. That's a huge range, from budget ($137 for a weekend) through super pricey ($66k for a balcony suite for 89 days from Los Angelos, to Hawaii, Australia and NZ, Indonesia, Philippines, and finally, Japan), including all sizes of ships, and even specialty cruises (like Disney).

You should be able to find SOMETHING that matches your tastes, price point, and interests.