Not worth it, diminishing returns. Not to mention, a huge waste of time, when you could invest in something with real value. Is there anything more volatile than crypto? Also, using electricity for apparently no other reason, other than to watch numbers on your screen increase at a snail pace, and periods where shares your GPU completes earn nothing.
You can make more money buying and selling graphics cards (if you can find a way to buy at rrp anyway), or investing on the stock market.
What I notice about GPU miners, is that they are generally trying to make a quick buck, unfortunately for them, it could all come crashing down in just a few months.