It's easy with practice. When you have people reading what's on the screen they're not listening to you. If you're trying to get content across on a screen then you're inviting them to ignore you completely while they process the content. A presentation is probably the worst format possible to get long-term high-quality memory retention of your message but acts as a good starter before the later non-presentation information dissemination.
My second slide bullets are what I'd have as chapter or major section headings if writing a report. If I'm doing a presentation on a major subject and have been asked to do a full service then I'll be submitting a later report using those headings as the major subjects. My first minutes of the presentation are scene settings, "telling them what I'm going to tell them". The bulk is the "telling them" bit. The last 5 minutes of the presentation are the "telling them what I've told them" bit followed by Q&A. Classic teacher training stuff...
For strategy talks, I entirely agree. If you want people to understand a concept, it is best that you talk and they listen (not really taking many notes).
If you are presenting new data and findings, then you will need illustrations, pictures and graphs (not tables).
I fear you are rather more advanced than the OP and your advice is excellent for an experienced speaker. For a less experienced speaker, slide are useful. They should have few words, but functions in two ways: firstly illustrate the point to the audience, secondly remind the speaker what he is going to talk about.
A title and a picture are excellent for a less confident speaker.