Sensible?
synonyms: practical, realistic, responsible, full of common sense, reasonable, rational, logical, sound, circumspect, balanced, sober, no-nonsense, pragmatic, level-headed, serious-minded, thoughtful, commonsensical, down-to-earth, wise, prudent, mature
Yes, wanting the ability to defend and protect oneself, ie... with a gun is sensible. Replace with any synonym if you like, they all work. But my suggestion is to flee the wacky lefto world of Europe, and don't look back.