Trump has been called a super ager by some people. That means despite a highly unhealthy lifestyle he has managed to remain active and functional despite all else.

Don't think he could just drop dead tomorrow. While I am sure millions of people would like it if he died suddenly of a heart attack or stroke, that probably isn't going to happen. Kissenger lived to be 100 despite not being much of a healthy looking guy for decades, and his slurring speech patterns were widely mocked as early as the 90s. I am not sure if anyone who wrote his Freakazoid appearance in the 90s ever thought he would live as long as he did.

What I am ultimately saying is that he might make it to 90 and still keep going.