I tend to play on normal. I've tried hardcore a few times before, but for some reason I just don't enjoy it much.

Usually normal or very hard, depending on the playthrough and the type of character i'm roleplaying . The vanilla hardcore in the game isn’t really for me but with mods it can be a lot of fun. Also playing on very hard with a force multiplier is an interesting experience

I like hardcore in fnv because of eating and sleeping and drinking I don't like the ammo weight though

Depends on the situation. The Hardcore mode for me is a must, since I like my fallout games to be as immersive and "realistic" as possible. As for the actual difficulty, I always use damage multiplier mods, so it doesn't really matter. Back when I played the game unmodded, I think I played it on hard difficulty. If I went up from that, those damn bullet sponges made me want to throw my controller to the moon...

very easy ..with god mode on.....sorry

I always play on Hard or very hard now. Hardcore on always. I also download mods to make it more difficult to stay alive like realistic weapon damage and sorts like that. Vanilla FNV is to easy, need to spice it up lol.