At the risk of sidetracking this topic, lethal weapons are useful when you want to neutralize a threat while exposed and under fire. Sometimes you just want to clean out a map, and if you're spotted and have an entire army coming after you, you're not able to Fulton the people you knock out, so you just risk them coming back later when reinforcements arrive and wake everyone up.
What's great about MGSV's approach to weapons is both the lethal and non-lethal weapons are fun. You still have plenty of non-lethal weapons that pack a punch, from SMGs that fire rubber bullets to high-impact stun grenades. Although my personal favorite is lobbing a sleep grenade and seeing three bodies collapse in a heap.
The game's systems penalize you for this, both in not gaining more members and score... unless you're able to beat it really quickly. While you're open to do it how you want, the game itself doesn't compliment it or push you towards it. Certainly not to the point that there needs to be so many purchasable weapons .
I dunno, while controlling snake is great, this was just consistently one of the most frustrating games to play this year, quite possibly because snake controls so well. Everything in the game works against you, from the narrative structure, to the boring helicopter intro/outros, to the weird way you have to hack around the bad fast travel system... sigh.
I dunno, I really want to like this game but it just makes me angry in retrospect.
It's just a game that isn't there. It's a control scheme and that's it. It frustrates me to no end.