Not to mention, Shadowrunning can be a perfect cover for being an infected. Typically, break-ins (Infiltrations) are done at night when there is less collateral presence and thus (frequently) less security presence. And casualties are a fat of life - many Shadowrunners are mass murderers (not serial killers) anyway, and so whether you put a bullet in their brainpan or drain them to death is mostly a matter of expediency. Ideally, you would avoid unnecessary killing (brings less heat), but if you can't risk leaving behind a witness, drain to 1 essence then kill via another means - so far as I know, there is now way to determine the peri-mortem essence rating of a corpse. And if flesh is your thing, you just have to make it hard to notice that pieces of an already dead foe will be missed - fire or chunky salsa-fied works well here.
Point being, if you decide that killing is the way to go to feed your unique dietary requirements, Shadowrunning could provide a more ethical purpose for such activities, or at least a more profitable one. And certainly a less conspicuous one.