By the way, do we really need several hundred GNU/Linux operating systems? Is it time to converge? Or would we be better off with several hundred different light bulb sockets, too?After all, there are a lot of distributions. Distrowatch lists no less than 593 distributions in their news filter. On the face of it, it's a legitimate concern. With hundreds of choices, how is one to make a decision?
The good news is that the light bulb socket analogy is incorrect. The socket is not the Operating System; the socket is the architecture. Viewed that way, there are relatively few sockets that are in widespread use, and GNU/Linux in general supports even the most esoteric of these. If you have a computing device, you can probably install GNU/Linux.
The real analogy is that we have several hundred light bulb manufacturers. And yes, we want that. They are each allowed to innovate and provide different products which will serve (or not) the needs of different userbases.
If you're just starting out with GNU/Linux, I still haven't solved this question: Which Distribution? I personally recommend Ubuntu, but the interesting thing is that my recommendation has changed several times in the past 10 years and that's definitely a result of the aforementioned innovation. I suspect in 10 more years, my recommendation will be entirely different and I'm psyched about that.