Ps. 90.10 disagrees with you, for a lifetime is 70 years but with strength 80. We are not concerned with a generation which is 30 or 40 years on average. We are addressing when is a reasonable time for Jesus to return "right at the door" (Matt. 24.33) which would be within a lifetime, not a generation. You're confused.

There is no immediate and foreseeable resource to replace oil. Thus, when oil goes to $200 and beyond, the nations will congregate in the middle east with 200 million military units (Rev. 9.16).