The cryptocurrency mining is very important because the mining could affect the market value of the cryptocurrencies that is in question as a result of this cryptocurrency may drop.
If mining of cryptocurrency stopped. Then we should be ready to see all cryptocurrency at a very high price. The mining process help to regulate the buying volume. Especially bitcoins
Bitcoin will die if miners stopped mining because miners mine fresh bitcoin but keep the system functioning by confirming transactions. If people cease confirming, the system collapses.