How do you end your slide deck ?
With a big thank you slide ?
Have you really thought about that thank you slide ?
The most valuable real estate in presentation is devoted to being polite. That’s certainly a worthwhile trait but realistically, by the time you are proudly being polite people have already forgotten your presentation.
So if you feel compelled to say thank you, than put it in the summary slide.
The ABC of presentation is tell what you are going to tell them (outline) tell them (body) and tell them what you told them (summary).
The last slide standing should summarize your presentation and if you feel compelled add a thank you as the last line to the last slide.