Cigars get better with age, like fine wine!  While some people will
just toss their stogies in thier humidor for a few days, others like to
keep them in there for years.  This brings out all the complex
flavors contained within the cigar.

Almost any cigar that is hand made, hand rolled, uses long filler tobacco leaves, these are premium tobacco leaves and will more than likely benefit & improve, with age.

When a cigar is made by hand, that cigar may use several different types of tobacco leaves inside that one cigar. One may think that their cigar is just the same tobacco leaves for the whole cigar. This is not the case.

Premium cigars use several different tobacco leaves to create one premium cigar, this is what sets apart the premium cigar from the average cigar.

When using several different tobacco leaves for one cigar means you will taste a unique blend of tobacco. When you store these types of cigars for a long period of time, all those different tobacco leaves will "Marry" together combining the tobacco into one fine tasting cigar. 

I myself had a Cohiba robusto in my humidor for 3 years, I was saving it for that special occassion.  We all know that Cohiba is a premium cigar. This summer I decided it was time to enjoy it. This cigar had a white dust all over it, which was actually crystal that had formed all around the cigar because the tobacco inside had all married together. Let me tell you this cigar had such wonderful taste to it that I enjoyed it right down to the very end, it burned evenly and tasted exquisite!

So the bottom line...... when a cigar it left for some time in the proper enviroment that it will indeed get better with time!