Reasons why marijuana wont be legalized that fast

I see there are some weed lovers in Steemit, and I have noticed, that most of them are from USA, where weed is allowed (I guess most states)
But below I will give some reasons why marijuana wont be legalized that fast in other countries (Europe)

Tobacco industry is too big, they have a lot of money and power, they will protest that in multiple ways, because that would mean tobacco sales would decrease.
Old people wont understand, when they were younger, in the world they were living, they were teached that it's very bad, and not acceptable.
Big pharmacy companies will see a huge decrease in sales, since a lot of small issues can be treated with marijuana.
People are not that educated around this topic, because there are still high standing people that have no clue about this, that's why they are saying it's bad for you.
Some doctors are still in conflict of picking a decision if it's good or not. Most of them say bad, since saying okay could cost them their reputation.