So the price is lower and has been. Who cares? Average down. Keep at it. Hold long-term. Eventually you'll break even and profit.
Ask the people who invested in Cabbage Patch dolls and Franklin Mint collectables how long-term holding worked out.
I think collectable Cabbage Patch Dolls are a bit different to a decentralized currency. Bitcoin will very likely go up and down for quite some time but I think it has a long life ahead of it and the potential for big gains is still huge.