If you're still running 10.6 for some reason, your computer is either a low-end one from at least 7 years ago, or you've made an intentional choice to remain on 10.6 for some reason
It used to be that low IQ was failing to identify the continuation of some trivial numerical sequence on some trivial test. The new low IQ is use-case blindness, the inability to even hazard a guess at the myriads of reasons other people live differently than you do. The ravening mob of blindness promulgators are ever with us. Pity.
Here's my story.
I bought my wife a second generation Core Duo iMacs, which I believe has never been upgraded from the original Leopard. I use this computer so rarely (about ten hours per years) that I can barely keep track of which leopard presently holds court.
The computer works—until some piece of software offers to "upgrade" itself, then restarts with a whole new user interface (I'm looking at you, iTunes). Then I'm constantly told the computer doesn't work any more, but the real problem is that she hasn't figured out where all the familiar functions were forcibly relocated.
I'm not willing to sit down at her desk and chase GUI tidbits from point A to point B, so I just told her "don't click upgrade". When something visibly breaks, then I'm willing to sit down and deal with it. Meanwhile I have enough sysadmin on my plate with my own Linux desktop, where I'm heavily invested in ZSH, and my FreeBSD server, where I'm making very heavy use of ZFS. This is where my neural matter wants to go.
I have a very low tolerance for having something trivial I've mastered at the autonomic level yanked back to the center of my attention. It took me close to a decade to cease seething about the relocation of the CTRL key in favour of a CAPS LOCK key that should have been ALT-NUMLOCK or, even better, CTRL-ALT-INSERT. FFS I can type ~50 wpm in ALL CAPS using the right shift key for six of my fingers, alternating to the right shift key for the other two. But guess what? The CAPS LOCK key is more prominent to my left pinkie than ENTER is to my right pinkie. If we normalize the utility of the ENTER key to 100, the utility of the CAPS LOCK key comes out around -1000.
The problem with most upgrades is that it's always more of this father-knows-best groupthink bullshit.
It's a huge project just to figure out what's going to change. The only recourse one has to all these unnecessary relearning cycles is to skip as many releases as humanly possible. I'd be thrilled if XP is the last Microsoft OS I learn how to use in this lifetime. I was an early adopter of Windows 2000 and I stayed there until 2000 went out of support. Later I ended up using XP in a different work environment and I can't name a single thing that improved, except that I had to disable a lot more bling for half a day. Long ago I held out on MSDOS until I could jump straight to Windows NT which I adopted within weeks of the Intel P6 becoming available. That was a real upgrade, one well worth reprogramming a decade of autonomic habits. I never used any of the shitshow 3.1/95/98 for more than the very occasional hour.
These upgrades change a lot of stuff for extremely dubious benefits. An upgrade is going from UFS to ZFS. That I can buy into. An upgrade is going from System 7 to OS X. On that one I can sell my wife.
What I really want concerning these fairly useless system frobs is the semantic web: searchable metadata describing every user interface action that formerly existed and whether it still exists in the new version, plus a mapping to a more-or-less equivalent version, if such a thing has even been retained. Oh yes, Apple is good at silent castration. Ideally the OS would track which user interface functions have been regularly used, and list out all the things the upgraded user will be instantly forced to relearn. But no. It's sexy. No assistance offered retraining for sexy. That what sexy means, lover boy.
Until such a world exists, small upgrades require leaping over a trust quanta with the four degree Kelvin cosmic background radiation as the only available heat source.
The other reason to upgrade her OS would be the occasion of replacing her old disk drive with a new new SSD which is long overdue, but there was a small roadblock. I got about 15 minutes into this project before I discovered that suction cups are involved.
Just what I need in my service kit: suction cups.
If it works, don't fix it.
If it wants to be a disposable appliance to the very core of its being, let it die in its birthday suit.