Mac client Problems and glitches

So I have been playing league since the start of the end of season 3 on my MacBook Pro. I know, I know; I play on a Mac, Macs suck for games. The point is that there are still a lot of problems with the Mac client that needs addressing. The really big issue is the client not opening from time to time. Since I have first downloaded the game, I have had to re-install about 4 times; which is a big hassle and takes a lot time. Currently to this date, it has been my fault ONLY once, and that was because I force quit the client, but since then it has been the actual client's fault. I can only compare the Mac client to a car: it depreciates over time very rapidly. After downloading the game, it runs so smoothly and seems so new and nice. Then after a couple months it starts to slow down, and eventually won't even start. I can still open my PBE client and play on there, but I cannot open the regular client. I know I'll probably have to just re-install again, but do any Mac users have any suggestions? Is there any short term solution? I have tried to restart my computer, open the app from the finder, but no matter what I do the regular League client will not open.