What? I'll grant you the corrupt politicians and stupid politics, but you get those anywhere and everywhere.
Terrorism? Yeah, sure it seems to have spiked lately, but if you count mass shootings as terrorism I'd wager the US would have more incidences of terrorism than any European nation. The US is also listed as having a higher rank on the Global Terrorism Index for 2015.
And finally, Europe has some of the most highly rated nations in terms of their citizens' happiness, at least the Scandinavians are enjoying themselves.
https://en.wikipedia.org/wiki/Global_Terrorism_Index (2015 data) https://en.wikipedia.org/wiki/World_Happiness_Report (2016 data)