As a long time user of Opera, I'm very happy that it exists and hopefully will in the future.
Although I like to try different browsers I keep coming back to Opera for a reason. It's still the one I like the most and has the features I need.
I've tried Chrome which is decent and easy. But it lacks some of the refined features Opera has.
I've tried Edge which isn't bad, really. Maybe even my alternative if there were no Opera. But still, Edge is just do Microsoftish for me and pushing its services just too hard on the user.
I've tried Vivaldi which is a wonderful niche browser with so many features and options. But whenever I tune it to my needs, it looks very much like my Opera set up which is more fluent and straight. And I'm missing Aria in it, really. Otherwise very decent browser and decent people developing it.
I've tried Brave. Well, it's fast and clean, almost too clean. I don't mind Crypto as you can easily disable it. But I often get the impression that it's a browser for Crypto first and anything else comes second. And I don't like its take on Google as they are heavily reliant on Chromium which although Open Source is mainly from Google.
Last, I've tried Firefox. It's a nice browser. But it lacks the sidebar and I run into incompatibilities now and then. So, I'd rather stick to Opera.
I don't think, Opera is perfect. I'd like them to upgrade quicker to recent Chromium updates just for security reasons. And I still would like there not being a Chinese company holding the majority stakes on the company.
Still, they have my trust, though. And I will stay with Opera as long as I won't be disappointed.