percentage of americans for legalizing medical marijuana
1 Support for legalizing marijuana use has grown among Americans under 44, and now most Americans 45 to 64 think marijuana should be legal (55 percent; in April this age group was divided). 2  The only age group that still opposes legalizing marijuana use is seniors 65 and older.ost â 56 percent-think it is being used for other reasons. Nevertheless, 77 percent of Americans who think most of the medical marijuana purchased is being used for other purposes still think doctors should be allowed to prescribe medical marijuana.