It depends on what i'm doing, most of the time i dont bother due to price, however if i'm on a driving detail or on long journeys going home etc i'll buy a few tins for the road, mainly for convenience, keep me alert etc.
or if i'm out of the **** towards the end of the night, i'll switch from beer/lager to something like RB+vodka or similar.
i've never really been one to eat/drink healthy, i'm a man of conveniece when it comes to that stuff, i am aware that its hardly the best thing for you to drink, but the nutritional value dosnt really concern me, the price however does.
saying that i know a guy who drinks it by the crate load, and he's a PTI funny enough.