Let's say, for the sake of the argument, that bitcoin's price will stabilize at around $1000 USD present value in 2030. Sure the marginal cost of creating 1 BTC at that time will probably tend to 1BTC. However, for all the bitcoins created 2009-today, and probably in the forseeable future, the cost of those BTC created is MUCH lower than $1000/BTC. Therefore, by your logic, the cost of creating BTCs will be averaged out too.
Furthermore, the assertion that half of the resources go into the production and securing of bitcoin is simply wrong. A bitcoin is not a plastic fork. You can use it more than once. You can use it thousands of times, millions of times or even more. The money that miners spent on electricity etc doesn't go into the abyss; they go into the hands of other people who will then use that purchasing power to buy other stuff. That money will circulate many, many times. So the creation of BTC will only be a small part of the economy.
Some good points, and more debate
Take a look at Gold: Central banks acquired gold as low as $35 per ounce many decades ago, but its market price is always decided by the current mining cost of one ounce gold. This is because the existance of arbitraging: If gold price is much higher than its mining cost, everyone will mine it and sell it immediately to get an immediate profit, this will drop its price to the cost
Furthermore, the resrouces going into gold/bitcoin production is to achieve one goal: To set a reference value for them. People value things using difficulty: The more difficult to get something, the more valuable it is. If it takes one day's mining using an ASIC farm to get one bitcoin, then bitcoin will be much more valuable when it took only one hours using a notebook to mine one bitcoin
No matter how many times bitcoin will be used, the lowest possible cost to get it will set its reference value, and that cost typically comes from production
Of course, doing something extremely difficult might not necessary generate demand, but if there is sufficient demand for bitcoin, and there is no way to further reduce the difficulty to acquire bitcoin, then cost will set a reference value
Gold never dropped back into their old $35 zone, this is obviously caused by fiat money inflation. Banks use printed money to purchase many different assets, and gold is a very popular asset, so the demand is always growing with more fiat money supply. But like described above, gold price can not be much higher than its mining cost due to arbitraging. Money printer who want to purchase as much gold as possible and as cheap as possible will invest in gold mines
Similarly, the demand for bitcoin might be extremely high, but as long as the cost is low, all the serious capital will first flow into mining, thus its price will always be close to mining cost. And when there is no way to further reduce the cost due to competition, capital will have to purchase on market, cause the price to surge