Lumpyoatmeal saidFRE0, if it's an option, investigate installing an alternative web browser like Chrome or Firefox. You can still use Safari in addition to the other one as necessary.
Microsoft is definitely better at supporting older hardware. But switching to Windows would require relearning how to use your computer and possibly replacing any software that you've purchased and so is probably more trouble than it's worth.
It's not like a car where you can keep driving it forever; because of the internet computers are interacting with and have to be compatible with something that's external to it.
I checked out Firefox, but it also requires an OsX update, so it is out. However, I can check our Chrome.
At one time I did use Windows, etc., and the change to I-Max was quite easy. Changing back would be easy too. But one reason I switched to Apple was that it seems unnecessary to be constantly fiddling with the computer, such as by running defrag, anti-virus software, etc., and OS crashes are very rare.
If software were written more carefully, there would be fewer problems.