Main use of buying weapons stems from the forging aspect of the game, where you will need to buy 2 weapons of the same type to improve the power of said weapon by one level, with you being able to improve the power level of each weapon twice (requires 4 weapons). Enemies can also occasionally wield these type of upgraded weapons as well. Since almost every weapon in this game has a drawback, forging weapons can either help alleviate these drawback or bolster the weapon's advantages. I think the removal of weapons durability is a rather good change ( at least for me) since my favorite aspect of the weapons durability system was choosing the right moment to use a particular weapon, which is still the case in this game as every weapon has a particular strength and drawback (weaker weapons buff your stats, but suffer from being too weak, while stronger weapons are quite powerful, but will debuff your stats). Forging new weapons is also a satisfying experience and still gives the player an incentive to buy more weapons.
