I get so many weapon mods that it's insane. I definitely don't need more. I'd rather the ammo, even if I don't necessarily need it at times. I suppose the biggest differences between people who think ammo is too much compared to those who don't are: 1) If you use mainly melee or never use turrets, you will have a lot more ammo sitting around, and 2) If you do a lot of infested quests, you will have a lot more ammo sitting around.
For me, I do use melee most of the time, but I also use turrets and so that keeps ammo down. And although I do infested quests, I don't do only those. I mix it up and do a variety of quests.
Yeah, I hate the junk turret ammo change to require lead. I stopped using those when they made that change. It isn't worth the cost and time to keep mining lead to make turret ammo, especially when it has much lower ammo capacity than regular turrets and you don't get any in loot and you have to be close enough to it for it to work. I just dropped it and only use regular turrets anymore. They really killed that for me (and I assume many others). I think only intellect builds really use them too much anymore, though that's just a guess.