I Have Astigmatism, Myopic And Presbyopia, What Are My Options?

I now wear contacts but they aren’t working well. the dr. says I have to choose to see better close up or far away.

Why Do People With Farsightedness Definitely Develop Presbyopia Later On In Life?

My optometrist says that in my 40’s I will develop presbyopia since I have astigmatism and hyperopia. He claims that it’s not because everybody eventually becomes presbyopic, but rather because I have farsightedness. Is that true? And why wouldn’t my regular correction for farsightedness correct the presbyopia? Why would I need reading glasses if I already have the correct lens?