Why sliders do not work:
This is known as "banner blindness." Users have trained themselves to ignore anything that looks like an advertisement or automatic image rotation. For a modern eye, a slider is white noise.
(01) People do not notice them.
Data shows that clicks on the first slide account for 80 to 90% of all carousel clicks. The second slide gets 5 to 10%. The third gets under 5%. The remaining slides are just decoration.
(02) Almost nobody sees the second or third slide.
The user starts reading the text on the first slide and the image switches. They mentally go back and lose focus. This hurts comprehension rather than helping it.
(03) Automatic rotation irritates and confuses.
Sliders are heavy: scripts, animations, multiple high-resolution images. On mobile devices and slow connections this is critical. By the time the slider loads, the person has already left.
(04) They slow down the site.
"We cannot choose just one message, let us show all five" is convenient for internal approvals but kills marketing. The homepage should say one thing. One idea, one action.
(05) They create an illusion of choice for the business owner.