With the recent "crash" it was important for me to check several times a day since I have set my price at $6,000 to sell if things go wrong. Luckily it did not get close to that price, and I hope it won't ever.
Sometimes you have to monitor it only if you can control your emotions to not sell in loss.
Checking bitcoin regularly is a very great way to monitor bitcoin especially that you've set a specific price as basis whether to sell or still hold your bitcoins and altcoins.