Specifically, do you worry that Microsoft is going to eventually do the Microsoft thing and horribly fuck it up for everyone? I've really grown to appreciate the language itself, but I'm wary of it getting too ingrained at work only to have the rug pulled out from under us when it's become hard to back out.
Edit: not really "pulling the rug", but, you know, doing the Microsoft classic.
Yes, MS's standard operation is to evolve the thing until it's completely hostile to your intentions, but not explicitly enough to justify a tool change for management.
They are currently in the "devs wanted" mode, it will probably be at least a few years before they change into "fuck you, pay me" mode again.