Even more importantly, Africa is now more peaceful than ever. Sure, there's an awful regime in Eritrea, but there's no civil war there. Yes, Boko Haram instills terror in certain regions in Nigeria, but that's hardly the main cause of the recent wave of migration to Europe.
Obviously, Africans migrate to Europe because they're wealthier than ever. They're rich enough to buy TV sets (thus they can see the Western prosperity). They have internet where they can find the way to Europe. Importantly, they have money to take such a long journey.
This appears to be the main attraction (no, I don't mean Emma):