Oil fields around the world decline at 5 percent per year.  Oil consumption in Asia is going to keep rising.So oil sands will be required for the next many decades.

80 percent of oil sands is not minable - it has to be retrieved by SAGD or a similar process. But photos of SAGD are not upsetting - they look like normal plants. Oil sands mines provide more provocative photos, even though similar mines where iron, nickel, gold, diamonds, etc use exactly the same processes. I don't see millions of North American women insisting that they don't want diamond engagement rings because mining is a huge polluting process.