It depends on how you size, and the quality of brass you use. If you full length size with non-bushing dies, if done properly, annealing helps because most likely the necks will crack first.
If you neck size using lapua brass, you will get loose primer pockets before the necks crack. No amount of annealing will help that.
I've had Winchester cases come with cracked necks out of the bag, and I've had lapua brass last 50 reloadings.
IMO, instead of investing in annealing equipment, you will be much better off by buying better
brass/dies. Those determine longevity much more than annealing.
