Why novellas?

           Most writers I know focus on novels, but I am more fond of novella and shorter works. I like reading, yet it has always been a struggle to read a full novel. Most books I've read are audio. I loose the desire to read after 20 pages. The stories I read, the plots aren't enough to hold by attention for 200 pages. And this carries throughout my writing. I do wish there were more novellas, like when I do to the book store--there are less than a handful. Most are religious. There are dozens of those. Many of the classics are novella length, like many of Steinbeck's stories. And I'm seriously surprised that today, people still demand novel length, since people have such shorter attention spans these days. Even I can't focus on any novel . . . it must be good for me to finish it. There are other people like me, who are casual readers, and novellas make more sense. It is easier for me to read and write, a novella.