I think even less than that. One big factor is the internet. Thesedays, people have unlimited access to information and actual scientific studies that prove that nearly everything the ONDCP and DEA say about cannabis is a blatant lie. With the rate that public opinion has changed in recent years, the amount of municipalities that have legalized cannabis possession, and how close the statewide initiatives have come recently...I think it will be less than 15 years.

But seriously, practically nobody agrees with these fascists...