10 Problems With Westworld Nobody Wants To Admit
4. It's Hard To Care About The Characters

It certainly isn't the case that Westworld's characters are bad. They are, after all, often interesting. But as for whether or not one can truly care about them, that is a different matter entirely.
There are three main issues as to why the characters are hard to engage with. Firstly, most of the characters in Westworld are, at least to some extent, A-holes, and since they're unlikable it's harder to get invested in their stories. Secondly, it was always very noticeable how much more interesting the scenes in the park were than the scenes in the control center, and the hosts are usually more interesting than the humans, which is rarely a good sign.
Anthony Hopkins' Robert Ford was a mesmerizing figure in many ways, as was Ed Harris' Man in Black, but since it was never clear who they were and what they were doing, it was difficult to become invested in them as people. That leads on to the third point.
Every character was wrapped up in a convoluted mystery and many times their true nature was only revealed in the finale. As a result, you probably spent more time wondering what was going on than feeling interested in them as characters. Yet in the end, there wasn't very much to reveal; most of the characters are just symbols and motifs, and thus largely lack development. If you tried to describe the character's actual, you know, character from memory, you'd probably fail.