Because someone said 10 years ago that it was slow, which is since parroted by a ton of people that would not notice it in any real life scenario.

Afraid of change. Different logo.

It feels clunky to me. However ads are so much more clunky that I'm gonna switch the second Vivaldi stops working properly.

I started with Firefox when I was a teenager yet, and when the first chrome version dropped it was awesome so I migrated. I think I was at uni at the time and Google was seem as a good thing. Gmail was just a couple of years old and was awesome. Webmails at the time was rought.

But chrome changed, and goodle changed. But many years into it was hard to move away. For me the biggest single problem with Firefox was that I could not kill tabs in the tabs "process manager". I keep a lot of tabs open and no browser really solved the problem of many open tabs and tabs that keept open for many weeks. A lot of websites have "memory leak" and slowly but surely grow and grow with memory usage (YouTube is one of them). So that and a bunch of tabs made the usage of the kill tab a must. Over the years I looked for extensions to both organize the tabs better and also not have to keep só much of them opened. But nothing really helped me change my bad habits. I almost migrated back to Firefox when they had the tab groups feature. But they removed and also removed some functionality that made easy to change the whole browser but was a security nightmare.

Anyway, things have changed and I am in the process of migrating. I can kill tabs in Firefox now. I was missing the group tabs feature from chrome, because I got used to it but I think Sideberry can do that and also help manage a lot of tabs/windows and also snapshots. I use session buddy in chrome. But that fucker failed me many times and I had to recovered the lost saved sessions. That kinda leave worried with Sideberry and use more of the advanced tab management stuff. But at least I noticed today that it can auto-export the snapshots to the external FS and then no matter what happens with the extension DB I can always recover it.

So Yeah. Took a minute but I think I am almost ready to really migrate.

TL;DR: Getting too comfy with a closed platform is a bitch.