About a year ago, I bought a 512GB Samsung 840 Pro SSD and installed it into my 15" Late-2011 MBP. After reading up on them, I was recommended to use TRIM enabler in order to keep the drive from eventually slowing down. I went ahead and activated TRIM for the time, and it's been active for some time now. After some time, it somehow got turned off I believe, and I used the Yosemite DP for its entirety. Fast forward to now, and I formatted and installed the official release of Yosemite. My first course of action was to go re-activate TRIM. The website for TRIM-Enabler had tons of people complaining of issues with it messing up their laptops. I waited a few days, and the developer has updated it and says kekt-signing needs to be disabled and has added the functionality into the application. My question is now: Is it really a major deal if I just don't bother with TRIM? I've read some articles that say TRIM is only really relevant if you have an older SSD, but then other ones that say it's a major deal and is crazy important. So which one is it?