sad to hear you go!

yeah, gamestudio development was abandoned a while ago. But also Unity is not a magical tool. I mean, some things area easier to do with gamestudio and others are easier on Unity. I think we should choose the engine depending of what kind of game are you aiming for and the features the engine currently has.
If you are targetting only windows platform and you aren't looking for the best AAA graphics then Gamestudio is quite enough for more simple or cartoon graphics. If you want to target more platforms such as mobile or consoles and looking for complex graphics then you should go with Unity (or even Unreal).
In my case I've playing around some time with Unity but as right now I don't take too much time on game dev and I'm working on a game with simple graphics on free time gamestudio does the job perfectly fine.