Here Ill give you some numbers.
27.7 million people in America have admitted to using cocaine, but only 1.6 million in the last month. If you assume that all 1.6 million are physically addicted (not likely at all), then 5.7% of cocaine users have become addicted.
6.2 million people in America have admitted to using crack, but only .4 million have used it in the past month. If you assume that all 400,000 are physically addictive (not likely at all), then 6.45% of all crack users have become addicted.
3 million people have admitted to using heroin, while only 120,000 have used it in the last month. If you assume all 120k are physically addicted (not likely at all), then 4% of heroin users became addicted.
Meanwhile 184.4 million Americans have admitted to digesting Alcohol with 109 million in the last month.
Source: Substance Abuse and Mental Health Services Administration, US Department of Health and Human Services, Results from the 2001 National Household Survey on Drug Abuse: Volume 1. Summary of National Findings (Rockville, MD: Ofice of Applied Studies, August 2002), p. 109, Table H.1; p. 110, Table H.2; p. 129, Table H.21; and p. 130, Table H.22.
I don't worry about what's harder than the other. They're all bad and it's more efficient to keep them all outlawed. My sample size is big enough for my vote.
The rest of your post is probably written by liberals. I deleted it. Personal experience is all I need.