Its pretty simple: GUI is more intuitive. I do not find them bizarre. Their diversity or bespokeness doesn't register as a hindrance to me. The options are visible all at once, or are a couple of clicks away. Contrast this with the command line where I more or less have to memorize each application's interface or look online or browse the manual for answers.
GUI lets me use keyboard + mouse. CLI is keyboard only.
Regardless of any rationale, my experience is what it is. No amount of counterpoints are going to change what I've felt using CLIs.