Investment in bitcoin is always profitable if you would ask me, however it depends greatly on you on how much profits you are gonna make from it. Everyone will tell you to buy at the bottom and sell at the peak, that's definitely correct. However, knowing the bottom and the peak is arguably the hardest thing in this crypto space. If you can lock up your investment for a long period, i think you will definitely enjoy a massive profit along the line because everyone that has ever invested long term in bitcoin are the millionaires called whales today