It isn’t inflationary

The problem with regular fiat currency is that governments can print as much of it as they like, and they frequently do. If there are not enough US dollars to pay off the national debt, then the Federal Reserve can simply print more. If the economy is sputtering, then the government can take newly created money and inject it into the economy, via a much-publicised process known as quantitative easing. This causes the value of a currency to decrease.

If you suddenly double the number of dollars in circulation, then that means there are two dollars where before there was only one. Someone who had been selling a chocolate bar for a dollar will have to double the price to make it worth the same as it was before, because a dollar suddenly has only half its value. This is called inflation, and it causes the price of goods and services to increase. Inflation can be difficult to control, and can decrease people’s buying power. Bitcoin was designed to have a maximum number of coins. Only 21 million will ever be created under the original specification. This means that after that, the number of bitcoins won’t grow, so inflation won’t be a problem. In fact, deflation – where the price of goods and services falls – is more likely in the bitcoin world.
It’s as private as you want it to be

Sometimes, we don’t want people knowing what we have purchased. Bitcoin is a relatively private currency. On the one hand, it is transparent – thanks to the blockchain, everyone knows how much a particular bitcoin address holds in transactions. They know where those transactions came from, and where they’re sent. On the other hand, unlike conventional bank accounts, no one knows who holds a particular bitcoin address. It’s like having a clear plastic wallet with no visible owner. Everyone can look inside it, but no one knows whose it is. However, it’s worth pointing out that people who use bitcoin unwisely (such as always using the same bitcoin address, or combining coins from multiple addresses into a single address) risk making it easier to identify them online.
You don’t need to trust anyone else

In a conventional banking system, you have to trust people to handle your money properly along the way. You have to trust the bank, for example. You might have to trust a third-party payment processor. You’ll often have to trust the merchant too. These organizations demand important, sensitive pieces of information from you. Because bitcoin is entirely decentralized, you need trust no one when using it. When you send a transaction, it is digitally signed, and secure. An unknown miner will verify it, and then the transaction is completed. The merchant need not even know who you are, unless you’ve arranged to tell them.
You own it

There is no other electronic cash system in which your account isn't owned by someone else. Take PayPal, for example: if the company decides for some reason that your account has been misused, it has the power to freeze all of the assets held in the account, without consulting you. It is then up to you to jump through whatever hoops are necessary to get it cleared, so that you can access your funds. With bitcoin, you own the private key and the corresponding public key that makes up a bitcoin address. No one can take that away from you (unless you lose it yourself, or host it with a web-based wallet service that loses it for you).
You can create your own money

In spite of the amazing advances in home office colour printing technology, most national governments take a fairly dim view of you producing your own money. With bitcoin, however, it is encouraged. You can certainly buy bitcoins on the open market, but you can also mine your own if you have enough computing power. After covering your initial investment in equipment and electricity, mining bitcoins is simply a case of leaving the machine switched on, and the software running.