Always avoided IE use. Had it for the infrequent times Firefox did not like some website, but that has gone away.
Same here. When I went to Windows 10 I had to do away with the old series Firefox and do research to put tabs on bottom where they belong (Firefox default is tabs on top, you have to use a script to get them below). After working with add-ons I found those which mostly mimic what old Firefox did and looked like. However, with each new update, I shudder that some techie thinks he/she has a better way to do things. But for now I'm happy with the way it looks and functions.