I used Opera 10 through 12, I believe, for a number of years during the 2010-2013 era too.
I was on a Pokémon site where "mass clicking" was essentially a necessity to play, so being able to open hundreds of tabs and set up keyboard shortcuts for tab switching was awesome with Opera. It also was the fastest browser on Tiger at the time, for the G4 iMac we had in our living room, as well as on my old 2001 IBM ThinkPad that I acquired for use during those years. Opera was able to handle a few dozen tabs with little delay on only 384 MB of RAM on that one! For a while, I preferred Speed Dial since it was similar to Top Sites on Safari. It also had similar keyboard shortcuts to Safari, so using Chrome or FireFox wasn't ideal for my tastes.
I still have it on my MacBook, but these days it's a "backup browser", mainly for posting on accounts that I don't use a majority of the time (for Twitter mainly).
I was on a Pokémon site where "mass clicking" was essentially a necessity to play, so being able to open hundreds of tabs and set up keyboard shortcuts for tab switching was awesome with Opera. It also was the fastest browser on Tiger at the time, for the G4 iMac we had in our living room, as well as on my old 2001 IBM ThinkPad that I acquired for use during those years. Opera was able to handle a few dozen tabs with little delay on only 384 MB of RAM on that one! For a while, I preferred Speed Dial since it was similar to Top Sites on Safari. It also had similar keyboard shortcuts to Safari, so using Chrome or FireFox wasn't ideal for my tastes.
I still have it on my MacBook, but these days it's a "backup browser", mainly for posting on accounts that I don't use a majority of the time (for Twitter mainly).