This is my experience as well. I seem to have lost all interest in it. I ordered a beer recently when out for dinner and after a sip or two I was done. My wife and I had dinner at home and after a couple sips of red wine, no thanks - went back to ice water. I haven't been a big drinker in a great many years but it seems odd to have completely switched off like this.

I found out an acquaintance of mine suffered a concussion under somewhat similar circumstances to mine. His most notable after effect was a new taste for wheat beers and fruit beers where he'd previously loathed them. He also completely lost his previously acute sweet tooth.

The brain is a funny thing. I guess we could do worse than losing our taste for alcohol. Like you said, it may come back, but if it doesn't I'm not too fussed.