Why do so many Baptists believe that these are the end times?

They've ALWAYS believed it's the "end times", and they always WILL believe that it's the "end times". Ten thousand years from now they'll still be saying it's the "end times". It's just their thing. The survival of their religion depends on working their followers into a terrified frenzy that they are in imminent danger of being cast into a pit of fire upon the "Judgement Day".