Many people are considering migrating from Yosemite or Mavericks, and have a nostalgic attachment to Snow Leopard, but are not considering doing the jump from SL direct to EC. I still run Snow Leopard on my 2009 Macbook Pro, but have recently got a Sandisk SSD drive and think that enabling Trim is a good idea (something not really possible on SL). Also, I am well aware that there have been no security upgrades on SL for a while and have been covering vulnerabilities best as I can with ESET Security. I do worry though about getting taken over by a botnet and by covert malware slowing things up and using up bandwidth. Things have improved with the new drive and also upgrading my RAM from 2 to 8GB. About six months ago, I was finding me going over my 3GB bandwidth limit regularly with normal browsing and email, but this has improved lately. Perhaps the hackers are not bothering so much with SL any more? The same happened to Windows 98 after it had been out of support for a while - people were finding these antiques actually safer to use than an up-to-date system. I have invested in a cheap hard drive dedicated to Time Machine, and still have my old hard drive with SL intact. I have also bought Parallels 11, but cannot install it on SL, since it requires at least Mountain Lion to run. I run XP on this, since I like XP best of all and some of my favourite software (sound editing, image editing, music writing and I also prefer Explorer to Finder for file management) runs best on this, and has not been improved on even in 15 years. I cannot live with later versions of Windows, and it is nice to be able to run XP on a current mac. What I am loathe to do is to spend a great deal of time reloading and tweaking software, and if an upgrade destroys or makes inaccessible my mail archive, then this is a deal breaker. I dislike having to download an operating system through App Store, since one can never be certain if the download is corrupted, since there seems to be no verification system on App Store. I also dislike greatly auto-installers especially after a long download (6GB will take all night), since I then have to sit by the machine and keep an eye on it to turn off the auto-install. I want to install when I and my machine are ready, not when App Store automatically decides. Would others consider now to be a good time to take the plunge, or should I hang on? I have gone through this after each upgrade, and each time I decided I was better off hanging on to Snow Leopard.