I'm the same way, I love t' just run in swingin' and playin' offensively like nothin' else. Can't stand slow or defensive play at all when given a choice... but at the same time, I really, really enjoy sleuthing about a battlefield. I blame Assassin's Creed for that.
I'll never understand why someone who games so aggressively and fast-paced such as myself loves stealth, just can't explain it. There's simply somethin' satisfyin' 'bout a successful, undetected stealth kill.