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?
I have bought before since some months ago. I don't buy more because the price is high and don't have savings to use. I have bought bitcoin because hope (to much) that the price of bitcoin will go high (as is verified the last three months). So i treat this action as an investment. If I would have money I will continue to buy again bitcoin.