While it's disappointing to see an independent being swallowed up by a megalith, I don't know that I'm devastated. What's more disappointing is that so few people use Opera in the first place, despite it being far and away the best browser out there.
For me, the main reasons to use Opera are (i) standards compliance, (ii) speed, (iii) ability to run on any OS (although sadly not on Windows Mobile ), and most importantly (iv) its vast and mind-boggling array of useful features that is squillions of times better than everything that IE, Chrome, Firefox and the top 100 Firefox extensions have all put together.
As long as I can continue to run the latest version happily on WinXP, it doesn't sacrifice its speed and responsiveness, and the feature list remains as long as a very long thing, I'm not sure it's going to be a bad thing. It will mean that websites that have only been optimised for -webkit- users will now be fully functional in Opera, and hopefully it will give the company the stability and security to continue, which was always going to be a challenge when they were using their own rendering engine.
Any posts I write in Arial are on my mobile phone, so please excuse typos etc. Any posts I write in Verdana are on a PC, so feel free to berate me mercilessly for any mistakes