There are so many things to describe. They are, fast transactions, no fees, you are your own bank, your account cannot be frozen and no payment can be put on hold and there's no middleman.
Given that some people do not want to use credit cards/debit cards, we know for a fact that walking around with a lot of cash with you, especially when you are in a place you are not that much familiar with, is more dangerous. Bitcoin is the great solution for those situations and greatly relieves us from that fear.