It started in college.
I went to college in upstate New York, and had a roommate who would stock up on Genesee Bock Beer when in season, and Guinness Stout the rest of the year. He showed me that beer didn't need to be ice cold to be drinkable, and a couple Guinness were more enjoyable than a sixpack of PBR.
Have always liked Guinness, but am also attracted to a variety of beers in any combination of strong, dark and bitter.
German Doppel Bocks and Marzens, Belgian Tripels, English ESBs, IPAs, Imperial IPAs, Porters and Stouts.
Lately, I've been drinking really bitter American microbrews, like Sierra Nevada 'Torpedo' and New Belgium 'Ranger', which are referred to as 'Extra IPAs'.
My wife does NOT like IPAs, but really enjoys stouts, especially Young's Double Chocolate Stout.
Anybody have a favorite out there?
'73 Norton 850 Commando - 3030xx
'69 Norton Ranger 750 - P11/1289xx
'67 Matchless G15CS - G15CS/1235xx
'61 Matchless G80CS - 61/G80CS/41xx