Ralph is totally right. Antarctica was -really- a trip of a life-time. AND, given the outstanding weather we were blessed to experience, a return trip could never measure up.
Africa, on the other hand, is always different AND, as Ralph says: addictive.
But one must wonder what it would be like to drive up to 250,000 lions. Maybe not such a good idea. Penguins might be safer.

I would also agree that if you are thinking of Antarctica, sooner rather than later would be better.
Normal health considerations, of course, are part of the calculation. But, also, travel restrictions are growing as to the number of people allowed per year. That means fewer beds and higher prices. I doubt that that trend will abate.

Until then, look at Lauri's pictures (link above) they are very good. A nice taste of our trip!

Doug