Ok, so your reasoning for not having the keystone pipeline is because people lost their lives in other pipeline accidents?
So then you MUST also believe that airplanes should not be built, look at all the people (and famous bands) that have died because of them. Also you MUST believe that cars should not be built, thousands of times more lives have been killed in automobile accidents than pipelines.
Electricity should not be used, look at all the electrocutions!
Water should not be used, look at all the people drowned or killed in tsunami, oh the horror.
Do you see how stupid your argument is