I don't use PowerPoint. Ever. And you shouldn't either.
A presentation ought to be a conversation with your audience.
And your job is to do one thing and one thing only - to persuade them to adopt your point of view.
A presentation, whether it's a 90-minute introductory overview on your services, an hour-long teleclass or a two-day workshop, needs to be engaging, entertaining and exciting.
If it's not, it won't persuade anyone.
And PowerPoint won't help you get there. It makes your presentations stiff, constrained, safe. And that's not what you want or need to get your ideas across powerfully.