If we exclude what you have already said about bitcoin one more thing why we should choose bitcoin is because the bitcoin have no signs of going down in it's value. Every other valute depends from bitcoin. And Bitcoin is growing higher and higher from year to year.
the price will be down but its just for correction price and the price will be bounce up again and you don't need to be panic, just wait and if you have another balance, you can buy in lower price. we choose bitcoin is because bitcoin today is the best investment that we know and bitcoin giving opportunity for us to make profit even for only holds in our wallet. but for people which want to increase their amount, they can do trading so they have many chance to make their bitcoin bigger.