Perhaps you should do a bit more research. China is becoming the largest investor in clean and renewable energy in the world. Middle East countries are investing heavily as well. They see the writing on the wall. Also, that logic that we shouldn't bother doing anything because others won't is stupid and the problem right there. We need to do our part and lead by example while cooperating with others to pressure lagards and encourage change. Doing nothing isn't a solution. We have passed a tipping point already and the question now is whether we can mitigate the damage and prevent even greater climate shifts.
I also see people mentioning ethics and SNC Lavalin. Give me a break. The Conservatives have always been about big business. If you for a minute think the Cons wouldn't have pushed for a deal for SNC you are a fool or a hypocrit. The only difference would have been that the Conservative AG would have been on board , a deal would have happened, and we would have likely never heard about it. Don't talk to me about ethics with either party. Almost all politicians are crooked, regardless of party affiliation. The Conmservatives don't have any better record there. Harper was notorius for trying to quash information, bury scandals, sneak legislation through in omnibus bills, prorogue parlaiment to avoid votes etc. Scheer has shown no evidence he would be any different. Add to that the swing to the right by the party instead of being more center right and it's a bad recipe for Canada.
Don't get me wrong, I don't like the job the Liberals have done either. They've done several things I disagree with. This gun ban is stupid and pointless. I agree there. But there are things I value more than guns that I think the Conservatives would put in jeopardy. I wish there was a viable third alternative. But the reality is we have two choices and my conclusion is that, while both are bad choices, the Liberals are the slightly less bad choice overall.