If Bob thinks its reasonable to kill Pete, because he (for instance) killed Bob's loved one, he's still not allowed to do that.
If Bob thinks its perfectly fine and ok to steal grapes from Woolworths because their bottom line can handle it, they always throw away 2% of the produce anyway, it's still not okay.
As humans, we don't share a universal moral or ethical code. We generally agree that murder, theft etc aren't right, but there's a lot of gray area from person to person. So that's why I think laws and conditions are placed on things.
In the end, I think what most people ere are discovering right now is that this is not a topic everyone can and should agree with. It's a really emotive topic, and I know for sure that no amount of logic, reason etc will make me able to 'un-feel' that a baby has rights. And just as some say a woman's rights shouldn't be made less because she's pregnant and shouldn't be impeded upon by a fetus, I passionately feel that as humans, and as the child bearers, we have a responsibility to protect the rights of unborn babies until they can take up their own fight for themselves.
I am glad that we live where people don't have to seek backyard abortions. That's for damn sure!
I also find my own opinion quite contradictory, because I really don't have any problem at all with abortion before 12 weeks. I am all fuzzy on abortions from 12-18 weeks, and from 18 weeks on, hearing of abortions makes me flinch internally.