Ahhh it's a fair cop.
I was a bitter drinker for many years, after all I come from the Midlands. But years at sea drinking lager (I only ever sailed on one ship that had draught bitter, a Ben Line Ship and I was the Junior Sparks) and after years and years of that, going back to bitter is hard to do.
So now I drink Guinness and lager (not at the same time, I'm not a complete Philistine) and when back up in the Midlands cower in the corner hiding my dark secret.