I agree with you. I am not completely closing my Bitcoin position (yet) but I have been expanding my investments to a much wider array of cryptocurrencies, and have also taken out most of my original investment.
While the regret would be awful if the price continues to move upward like it has been, the piece of mind from being safe and utilizing good practices is very important as well.
I just know that Bitcoin is currently at a much more inflated price than ever before, and I intend to play it on the safer side.