For speculation? To buy on the dark web? To buy online on sites like purse.io? To send money? To do business? To have your money under your control?
What is/are your purposes when yu buy bitcoin?
For my future savings of course. The most recommend medium of exchange to holding in long term or spend it directly but no need to worry due to the value of bitcoin keep increasing over time. I can saving gold and bitcoin but in the end of the year bitcoin will give more profits for me.