It depends. Mining takes a lot of investment—equipment, electric bills, internet, and more than you can imagine.
Electric bills and internet are running costs, not investment!
but it is possible if you can afford it and are knowledgeable about building a fine and efficient mining rig.
Nobody builds mining rigs, you buy an ASIC, you put it on a shelf and you power it on, the only time the miners decides on efficiency is when he buys the type of gear he will mine with it.
Bitcoin mining was profitable but now gradually decreasing mining hash rate regularly.
Yeah I can see that decrease:
100% up in a year /S
So that when you join a mining pool, you have the opportunity to be able to do more creative things within the circle and industry, and as well you need that funding to be able to do quite a number of things, for example, an affordable electricity, to earn rewards that you are planning or that you are aiming in the mining industry even if it is not monthly though.
Creative things , like?
Writing poems about bankruptcy or what?
I have a feeling that more times passes and Bitcoin grows as well as adoption the more of a mystery mining begins to look to some, much like religion!
I mean seriously, it's basic business, you have x and y, just as you plan a donut shop near NYPD headquarters or a pork ribs food stall in Riyadh, it's pure economy, you have the means or you don't, cost and profits, 5th grade elementary school economics.