You could be killed by a lunatic in your own home. The man had a mental illness, that happens sadly everywhere, every town in every country.
What a sad life if you never take the chance to go and see other nations and cultures as well as your own. Tenerife for example is a lovely place worth visiting (as is mainland Spain).
I have visited Spain and many other countries..At the time I was not afraid to walk down the streets..I can say I have been to many many countries and lived in Brussels for four years..At that time we had no fear of walking down the street and having some crazy chop our head off..