Arguably because Apple wants you to use gestures to do all sorts of things with the touchpad. Additionally, that pad can be configured so that each side works as a different button, or that a two-finger click is the equivalent of the right button or …
But anyway, it isn’t a mouse. Macs haven’t had single-button mice for years and years and years, but you still hear jokes made about it now. Every single Mac I have uses an MS Basic Optical mouse. Just plug it in and off you go, pretty much the same as you do with a PC. Which will also work with your niece’s MacBook.
Brand new Macbooks don’t have a button, per se, at all on the touchpad. Rather, the pad itself is the button. Or more precisely, the buttons. Press down on the left side of the pad, and you get a left click. Press down on the right side, and you get a right click. Admittedly, it doesn’t have any way of doing a middle-click, which is a bit annoying, but it’s seldom that you actually need that, and it’ll recognize a middle-click on a separate mouse just fine (besides, do PC laptops generally have a middle-click on the built-in pointing device, either?).
On most (if not all) laptops running windows that I’ve used, clicking both clicker-buttons is a middle-click. I want to say it’s the same for computer mice. I want to say you get the same effect at least on Ubuntu.
I think that by default, single-finger click is left button, two fingers is right, and either 3 fingers is middle, or I have the settings in BetterTouchTool confused with what the actual settings are.
I received my new 27" iMac a couple of weeks ago. It came with a Magic Mouse. I hate it just as much as the previous mighty mouse. Even when configured to right-click, they won’t properly right click. I should mention that I use them left-handed, and I don’t swap buttons (i.e., left is still left, and right is still right). So I’m still back to my ancient Logitech USB mouse (it’s been a tank!).
I also ordered with it a Magic Trackpad. Right-clicking is still touch and go, but I love using it so much that I’m getting used to the sometimes-right-click.
Oh, the original OP four questions back? Does anything ever go wrong with a Mac? Yeah, and I’m pissed about it. The new iMac arrived with a defective optical drive. It reads and passes bad data to the OS, and unless the OS is doing its own checksumming, the problem doesn’t get caught. I picked it up from service today, and it has the same bloody problem. I suspect they probably didn’t really change the drive.
Of course, the only way those can get a foothold at all is by people deliberately downloading and running them, despite the warnings from the OS that it’s a program downloaded from the Internet and might not be safe, and that they shouldn’t give their administrator password unless they trust the program. At that level, there’s nothing you can do to make an OS secure.
And of course, those programs also only manage to get users to do that by telling them that it’s a security package. If a user were convinced (incorrectly, but understandably) that it was impossible for a Mac to get infected, they’d actually end being safe from those.
You’re right - the two fingers is a native setting, and the three-finger click requires an additional program. (now that I’m at home and can work on it)
Which limits the damage you can do to the system as it is not running with admin rights.
But seriously, all operating systems are vulnerable to this as the security that is failing is not anything on the OS level, but failure at the user level. When it comes down to it, if the user runs stuff that isn’t from a trusted source Then there is little the OS creator can do.