The Ultimate one button macro?

Pretty simple question, is there such a thing and if so is it available?

Im a disabled player and totally rely on the one button macro, thanks to the hard work of you guys on this site I am able and complete with most players on the servers, although I dont do Mythic + or raids as I can be a bit slow at times due to the arthritis in my hands and fingers, I mainly play BM hunter and Ele Shammy and have played wow from the very start back in good old 2005, the game was released in Nov 2004 and I started playing Jan 2005 so missed approx 2 months, but have been here ever since.

I just want to thank everyone that contributes to this fantastic site without you I cant play, it really is as simple as that, so thanks again guys and please keep up the good work