How long can I use Logic 9 for…?

Me and Logic 9 have a thing going on. We love each other and work together brilliantly. I trust it and it never lets me down.

I downloaded Logic X when it was released and I hate it. Seriously so. We don't get on, we argue, it never does what its told and things are not working between us. I'm going back to Logic 9 with open arms.

My question is - how long do you think I can realistically carry on using Logic 9 for? Approximately when will some future OS eradicate all support for the Ye Olde Logic 9? Five years or so?