I deleted Destiny from my hard drive just over a week ago (same reasons as you) and I don't regret it, quite the opposite, I've been playing the Witcher 3 and feel like I rediscovered why I love video games, I've also had a lot more free time to do actual real life things because I've not been mindlessly grinding all the time. I've obviously still got my saves and I've stayed on this forum as I intended to return for TTK, but everyday that passes I feel less inclined to return. Just delete it from your hard drive so you can't just click to play, see how you feel after a week.