I held on for a long time. Oddly enough, it was Yahoo (when they "modernized" My Yahoo a few years back) that forced me to rely upon other platforms more. Until then, I struggled with PDFs, printing of many kinds of documents, lived without Utube and flash. Ppl would email enormous pics and video that were hard to play.
I still use Amigas for many things. I trust AmigaOS more than any other OS. I know it better. It is still a living, fascinating thing that speaks to my imagination.
Other OSes belong to the corporations that created them. I use them because they forced newer standards that all the rest of the world adopted. It's tough to be an island. Grin.