Well, you could also use a PC laptop until the end of the days, if you wanted to. I've got a Compaq which I bought in 2004 and which is still quite usable, despite being completely obsolete.
Try updating that Compaq to the latest version of Windows, it wouldn't run. I recoded the installation requirements in Leopard and forced an installation on a then almost decade old eMac (running a 450 MHz processor). It not only ran FASTER than the previous OS X running it, it outperformed an Intel 1.3 GHz Windows XP system by a hefty margin. Thus the point of my comment. Not only did the Mac system not require additional costly software and subscriptions for usage, it wasn't slammed down with adware and bloatware and the same hardware ran newer Operating Systems better.