I use it for watching videos, and if a site doesn't work in my browser of choice (Firefox) Edge is usually what I try it in first since I tend to have it open pointing at Twitch or Youtube. When I open stuff in it, it's usually pretty slick - it just has weird stability issues (randomly hanging, etc) that stop me from using it more often. I do value having my Firefox profile everywhere (mac, windows machines, android phone) and I can't get that out of Edge, but that's not really a factor in why I don't use it much.