This country makes it very difficult not to own a car. I wouldn't feel bad about it. I hate cars and do own one, but do not blame anyone for if they do. If we had better infrastructure, and too a bigger stand against auto manufacturers to make automatic braking/ped and cyclist detection standard, we'd all feel safer on the streets. I think the only place personal responsibility comes in is making sure you're not making trips by car that you could otherwise safely do by active means.