At risk of being accused of 'victim-blaming', which I will categorically state that I am not, I guess for me its about risk assessment. If its something that carries a lot of risk- ie walking around alone after dark in a 'bad' neighbourhood, I won't do it, in the hope I reduce my chance of being mugged or assaulted or whatever. The same for accepting drinks off strangers or people I don't know well, going home drunk with strangers (as I have gotten older and wiser)or leaving my kids with most people I know. Of course, these measures don't necessarily mean I will never be assaulted or robbed or raped, or that a family member will never hurt my children. But I will continue to take steps to try to reduce the risk.
None of this means that in the instance I did accept accept a drink off a stranger, or someone I thought I could trust- that it was my fault, as I didn't 'take the necessary steps to protect myself'. Of course only the person who actually committed the crime is responsible.
Surely everyone else takes steps to try to protect themselves and their families from harm?