My first character was a 2e Thief, and so were most of the guys I played in the first few years after that. But I got frustrated with the utter uselessness of a 2e Thief by 7th-10th level, and our games were getting to that point, so I started playing wizards.
While a stock 'Dave character' is probably still a blaster mage (whether wizard, psion, or warmage), I've run just about every major archetype except a pure warrior type (barbarian, knight, fighter, paladin, melee cleric, etc.) or a monk at this point.