Even if you disregard 98% of the people who actually study climate change, the oil is going to run out (perhaps sooner than we think if the Saudis really are lying...)
If we want to keep oil for what it's best for, making plastic and, err flying aeroplanes, then we need as many other energy sources as possible. That includes nuclear, which works now but is not as cheap as promised. Solar, getting cheaper all the time and wind (I like wind farms.)
*I do believe in it, taking the view that if 99 civil engineers said 'don't drive over that bridge' and an electrical engineer said 'the bridge is fine' I wouldn't take my kids over it.