Seriously though, i have met those who refuse whisky for exactly the reason you state. Happily, I seem to get a nice buzz and a pleasant mood from casual dramming. I don't drink to get drunk ( I use other means as you know!) but it does have a pleasant side effect...
Truth is, with ANY substance you ingest, especially if you INTEND to get pleasantly alterred, it can lower your resistance to stressful situtions, or "things not going your way", and this CAN easily translate into short, or explosive temper..
...I've found this even applies to strong fresh coffee. It can lift me for an hour or so, then i get these feelings of rampant adrenaline. I don't like that feeling and have max 4/5 cups a week!
i swear if coffee was discovered tomorrow it'd be banned as a dangerous