Yes, the only benefit of legalization is making it safer, but moving the profit from one illegal gangster to a legal one called government is marginally better :/

Which EU countries do you talk about? While there is an increase in Germany in the last years to the levels of 10 years ago, 
https://www.dw.com/image/38758130_304.png

I would say the far worse place is the USA. 

http://infographic.statista.com/normal/infografik_11602_tote_in_folge_einer_drogen_ueberdosis_in_den_usa_n.jpg

(drug deaths through illegal drugs in both cases)

"There are a lot of Turkish, Middle-Eastern, and Muslim gangs dealing heroin in The West [...]"

Pales in complexion compared to the money the Russians and Chinese are dumping into the game, their countermeasures against anything that the U.S. aims to stop...
You last point is outrageous, have you ever done heroin? Have you any experience with smack heads?
Heroine kills the soul....