For me to completely leave PowerPoint.

I love using Miro, however i still tend to gravitate to powerpoint for 2 reasons. 

1. the use of animations - as a trainer i like to be able to reveal parts of the slide at a time to ensure im controlling the attention of the learners. 
2. trainer notes - its useful to have bullet points available as you present 

if Miro was able to have these two things i would never need use powerpoint again.