The ultimate idea is that bitcoin will replace traditional currencies.
Because they believe it will increase in value over time, people are actively investing in bitcoin.
For that reason, you might wish to keep whatever bitcoin you have. But because demand has grown recently,
If you "sell" your bitcoin right now and send the same amount to your bank account, you might be able to benefit from the transaction.
Theoretically, you will be able to use bitcoin for any kind of sale in the future.
There are currently not many companies or people who accept bitcoin payments.