First of all I know all the apple people are going to be saying "just update! Its for the consumer nothing can go wrong!" Which is probably true for most peoples cases. But im still on 10.9.5 because it works good with all my Software (Running Pro Tools 11.3.1) which is infamous for not working with OSx upgrades. So in the Pro Tools world the word is basically 'upgrade once you HAVE to'. With that being said, would disadvantages in terms of being hacked or anything like that do I have while being on Mavericks compared to Yos or El? Or basically any major system advantages that we KNOW Mavericks is behind on?? An extension of why Im hesitant to update - I have a horibble history with updating my apple products. Everytime I used to update the OSx on my iphone by phone would stop working then apple would blame it on something else forcing me to buy a new one. Eventually I switched to android because I was convinced they used update crashes as a way of getting people to spend more money. Which is making me scared to update my macbook because I cant afford a new one and its already a few years old. I cant afford to hear that same BS again when its always the update that ruins my hardware - Even when they say it isnt. The coincidence became too relevant for me to ignore and now im just simply scared to update anything from apple. I know it seems stupid but its from their ridiculous actions in the past.