I'm reading Asimov's Foundation Trilogy, and can't get into it at all. I've been trying to finish editing my own book on flights lately, and am just about there. I've kind of decided not to pick anything up until I am done with it, so I don't mess with my current headspace.
I have found that the more I study writing and the more I focus on classics, the less patience I have for "classic" sci fi. Asimov, in particular, irritates me. Philip K. Dick for the same reason. They're hailed as gods but the fact of the matter is, 98% of their output is dreck. Foundation is among Asimov's best but that fundamentally means that it's the only stuff that's about as good as the conventional prose of the era, most of which has been forgotten. Peak Asimov, as far as I'm concerned, is Nightfall and Bicentennial Man.