Dan, I'm sure others will agree, it makes all the difference in the world. Many cigars are good OTT. But I personally have some now that have been in the humi for 2-3 years. It does make a difference, definitely. Now mind you, I don't believe you can age flavor into bad cigars. But many many cigars are just so much better after 1, 2, or 3 years. It's amazing. That's why so many folks here have those damn big coolers! :-)
However, if you buy a good aged cigar, of course, it's ready to smoke or share.