Cheaper, easier to find right spine/BH/point combo. Carbons were too light. You either have to get a heavy spined and put a 200gr point on the end (and have FOC like 25%), use the gold tip wieght system (equal wieght both front and back), or put in wieght tubes (wieght tubes are expensive). I want at least 11gr/lb pull with trad. A 600gr arrow out of a 52# bow going at 175fps is lethal. I would rather have that combo than a 400gr arrow going at 190fps. Heavier arrows are more quiet also.

So alums are heavier, and much straighter and much more consistent spined.

Actually my fav is Port Cedars. But finding quality, straight, straight grain, consistent spine cedars are tough these days. I have two dozen by two different people (3rivers being one), that suck.

And lastly, I will add, over the past 20 years, I have gathered up quite a collection of aluminums. I have 2219's, 2216's, 2020's, 2018's, 2016's, 2314's, so I go out and bareshaft tune and if I find the right spine, then I am done. I would have to start over with carbons.