Not all cigars warrant aging.

Yes, many Cuban cigars can be found pre-embargo and pre-WWII. Would I buy one? No. Stupidly expensive for something you're going to burn Would I smoke one if someone gave me one (an unlieky occurance) Sure!

It seems to me that the basic rule is that if you have a powerhouse cigar or a young cigar with alot of bite, it can be mellowed with aging. Generally a year or two.

Most Dominicans are not suitable for long term aging and should be smoked within two years. They're generally too mild or mellow for aging. Long term aging a Dominican cigar would result in a bland, boring smoke.

Google for "cigar aging". You'll find a lot of info out there.