I'm old enough that it's questionable I'll be around in 21 years for the next one in the U.S.. Only my middle daughter has not yet seen one (wife and the other two daughters are good). If I am lucky I'll be alive to join her for it.
I have to say, bit off topic, I'm fairly pissed off that I didn't get "my Halley's comet". Or rather, I got it, but it was crap. I suppose I could live to be 97.... (I am not sure if Mark Twain was lucky or unlucky with regard to Halley's.)
Anyway, Hale-Bopp was a treat, I have to confess. I suppose I am fortunate for that.