Don't use that logic.
Because AGAIN as halfling lore is described, halfling lore for leavinghome isnot a strong motivation to raid tommbs for treasure, attack orc hideouts, and slaying dragon.
Hence the problem. wanderlust and curiosity are etter motives to wander than be a violent adventurer. D&D is not a game of peaceful adventure. It's violent.
Party talking to a Halfling in a city: We're about to go plunder a dragon horde. It's rumored that it contains an artifact that will answer any question.
Halfling: Ooooooh! That sounds interesting. I'd love to ask it some things. I've always wondered why the sun rises in the East.
Party: You can come with us, but it will be dangerous and we will likely have to kill the dragon.
Halfling: Okay! As long as I can ask the artifact why out of all the creatures on the planet that can fly, Fly got the name. I've always wondered that.
Party: (laughs) Then welcome to the group.
Curiosity and wanderlust can explain almost anything. And then of course there are the manyHalfling adventurers that don't conform to the racial lore, per RAW.
All the lorehints to half elves being outcasts even in human and elven society. IT all hints that occupations that take them outside society or the norm.
Sure, but a wandering salesperson fits that bill. Lots of wandering outcast things to do that aren't adventurer.
BTW 4e: Half-elves rarely settle down for any length of time. Their wanderlust makes them natural adventurers, and they quickly make themselves at home wherever they end up. When their paths take them back to a place they have visited before, they track down old friends and renew old contacts.
The whole gimmick of the whole half elf race is that they always leave home and seek comfot in other weirdos like them.
That doesn't mean that they all become adventurers, or even nearly all, or even 20%. And again, there are very few half-elves.
.1% adventurers is actually too high. An adventurer is a very very very rare occupation. Tombraiding, orcbusting, and dragonslaying without the backup of armies is the life of a crazy person.
That's the whole point. Half elves, half orcs, and tieflings don't fit in normal society. So most of them are drawn to the weirder and stranger occupations.
And again, there are LOTS of occupations that don't involve adventuring that also involve wandering and being on the outskirts of society.
If there are only 100 of each half elves, half orcs, and tieflings, at least 50% are packing class levels. And that's a low estimate. Why do you think every half elves, half orcs, and tieflings is a secret level 5+ fighter, rogue, or mage or some crap who has a history with some gang or has 11 adventurer friends, half who are dead, or opened a business with their treasure money.
What? I don't think that and it certainly isn't true.
Halflings don't have this push. A wandering halfling might just tour like a normal person.
Normal people don't tour in a medieval society. Touring is a modern luxury.
And all 3 are adventurers, active or retired.
Nope. All 3 are normal kids to the normal Tiefling mother and father. One of them, bitter about the treatment he gets, will grow up and make a pact with Mickey Mouse, becoming a Warlock.