I appreciated the fact that when I ran out of ammo I had to resort to other means of combat w/ the characters that typically relied on ranged. I find it WAY more relative to the important aspects of the game than food, for instance. It makes you have to plan in advance and modify your behavior if you haven't or weren't able to find an adequate supply. Missiles take up inventory slots so that's another factor to have to consider and I say fairly negates the "well I'll just buy a years worth" argument.
Planning, strategy, and combat are what I enjoy about these types of games. Unlimited supply of ranged weapons isn't useless minutae. For the record I would be completely OK with having to repair armor etc given that there were adequate means and methods. There certainly are a number of anvils and workbenches in the first part of the game. Throw in some NPC's here and there that can perform repairs and bingo bango there ya go. I would MUCH rather have this than the food which has already been discussed. It also adds an element of potentially improving items beyond their standard stats by either combining with other items or having an NPC vendor do it for you.
Bloody hell, another micromanager... You really have nothing else to do in your life, do you?
You know, I have a secret recipe how to never run out of ammunition. I can even share it with you. It's simple, really: don't play games where you have to buy it, unless your net gain is positive due to loot, or you are always within 50 metres of a nearest shop.
When I played BG2, I had to stuff the entire inventory of archers with arrows, often borrowing some free space (which was in no way "free" in BG2) from tanks, every time I was going to a large remote location, like Firkraag's or Amaunator's. And by the time I came back to city, all these arrows were usually gone.
You are saying you enjoy managing it, and I say it's an exercise in time wasting, not to mention the money sink. Good that neither of us works at Larian and don't make any actual decisions, innit?
If you want DnD with items having durability, I may have a recommendation for you. It's called Das Schwarze Auge ("The Dark Eye" in English), and is essentially the German version of DnD. Not exactly a clone by any stretch, in there you will have to grind materials for both crafting and repair of your weapons and armour. The amount of grind, as I'm sure you'll be pleased to hear, is so insane that it sometimes comes close to Lineage 2. At best, you can expect to craft a single good weapon per character over the course of a game (or so I've heard). Have your "fun", and leave us filthy casuals to our toys. Danke.
