I could be missing the bigger picture, or other factors, which make this not something to worry about. And that is what I am seeking by the purpose of this thread.
Bitcoin is meant to be inflationary in its first years. We are going from $0 worth of bitcoins to billions. The initial goal was to try to hit that sweet spot where new money coming into bitcoin matched the mining costs going out.
One example of money coming into Bitcoin is something like bitwage. I am currently converting all of my paychecks to bitcoins every 2 weeks through bitwage. Let's say that I am bringing in 10 bitcoins worth of pay every 2 weeks (it's actually a bit more but we will go with 10 for ease). That is fiat currency being converted to bitcoins. Essentially money flowing into the bitcoin economy.
With 3600 bitcoins being created each day, that is 50400 bitcoins created every 2 week pay period.
If only 5040 people do the same as I do with their pay, then all mined bitcoins leaving the bitcoin ecosystem have an equal amount of bitcoins entering the ecosystem. That one action cancels out the mining costs.
At the current price, there are about $25 million worth of bitcoins "leaving the ecosystem" (if you go with the horrible assumption that bitcoin miners have no interest in bitcoin whatsoever) monthly.
That is peanuts in the world of finance. That amount of VC money flows into Bitcoin companies regularly. I know they are not buying bitcoins but they are investing in the technology which then makes Bitcoin better and encourages even larger amounts of funds to flow into Bitcoin.
And think of all of the people who say that Bitcoin is used just for drugs. The world drug trade is currently over $300 billion per year. If Bitcoin made up just .1% of the world drug trade, all mining costs would be paid for (just from that one industry).
The remittance market made over $600 billion last year. Gold value is in the trillions, e-commerce, currency exchanges, etc. etc...
Worrying about the tiny cost of Bitcoin mining compared to the incoming flow of money is like complaining that the cost of paper for $100 bills is going to tank the dollar.
Will the mining cost prevent Bitcoin from being worth $1 million/BTC any time soon? Sure. That is the built in inflation of about 12% (next year, 6% and 4 years later 3%...). But the money flowing in is why we are not at $1/BTC anymore.