What is the pros and cons of posters?

What is the pros and cons of posters?
The pros and cons of posters are actually pretty simple. If you are comfortable presenting in front of people or enjoy it then that is obviously a pro. But if you are not then it is a con. Also everything you need for information should be on the poster. So if you end up having to present you can look on it if you forget what to say. A con that I've noticed is that some people have horrible vision and were to "chicke" or whatever to wear glasses or contacts. They weren't prepared and tried to wing it, and ended up epically failling. They could have looked on the poster. These are just a couple pros and cons, feel free to add on.