I think that's the main reason why the price of bitcoin went down and the fees got increase.There's no way to stop sending bitcoin , because if we stop the mining process would also stop. Many people are running there mining machine they're using their power and money to run it all power will be lost. Bitcoins tx can't be stopped for a day as well buz millions of people using it.
Most of the block reward comes simply from newly minted coins. In future this will not be the case, but we are not there yet.
Lack of transactions will not significantly impact the mining industry, it will just readjust the balance.
You understand thats not really true, right? ALL of the block reward and fees come from newly minted coins. Miners get their payments from fees and block reward. Both fees and block reward are awarded when a miner finds a block. Its true that eventually the block reward subsidy will end (or become insignificant).
The number and size of transactions determine how much transaction fee money comes from mining. Sometimes stupid people put way too high a fee and others put way too low a fee on a transaction but they are usually balanced in amount. Increasing fees (readjust the balance as you say) harms the mining industry because fewer people are willing to use bitcoin. The more data a transaction carries, the more fees you need to attach. A larger block size will lead to more confirmed transactions, which means the cumulative fee will be high, even though each transaction charge will be low.
Mining fees (and currently the block reward) are necessary to keep the miners willing to secure the network (mining is bitcoins security system). Without miners, the network would be attacked because it would create an opportunity for a successful 51% attack.