Some PowerPoint documents are meant for reading, not for presenting. In many ways, PowerPoint is a more flexible tool to write text documents than a rigid word processor. It is easy to add graphs, shapes, text boxes.
If your document is a text document, treat it as such and do not try to turn it into an on-screen presentation. The resulting presentation will be something in between that is not good to present on screen, and not good to read on a monitor. It does definitely not look Zen, and the short bullet points in big fonts are too cryptic for someone to understand without explanation.
Instead have a look at what great document, brochure and newspaper designers do to make text readable. Smaller, lighter fonts for body text. Lots of white space around text blocks. Subtle use of colors. Subtle highlights of titles. Columns to avoid straining the eye across long lines.
Sometimes you can mix styles. A stunning image with a big headline that says that food shortage will be a major issue in 10 years from now. The next page is a restrained text page full of facts and information supporting your point.
There is nothing wrong with a text document in PowerPoint, as long as you admit that it is a text document.