I think age has little to do with drug dealing. Recently, two elderly women were stopped for a traffic violation on I-35 in South Texas. The DPS Trooper who stopped them got conflicting stories on where they had been, and where they were going, they allowed him to search the car. Under a pile of clothes and several suit cases he found over a million dollars in cash, and several one pound packages of drugs. One of the "ladies" told the trooper, "take the money and drugs, and let us go, we won't tell on you."
I know of several other cases where older citizens were lured into the drug trade by the money. Often they need the money, and turn to drugs because it is easy, and profitable. For some it is a means of survival as a result of low social security and/or medical bills, but I still can't condone it, a dealer is a dealer, no matter what spots they wear.
I also know of another case, in the local area, where a lady was arrested with a quantity of drugs in her purse after a tip from an anonymous caller. The cops executed a search without a warrant; their stories on what took place during the raid did not match, the jury found the lady not guilty.
It is suspected the call was made, and the drugs were planted by her estranged husband who was attempting to gain custody of triplet boys.
By the way, did you know you do not have to tell a LEO where you have been, or where you are going after a traffic stop. He may detain you, but there is no legal justification to ask this question unless there are cirmcunstances that indicate you may be involved in a crime.