In fact, it's not as important as you think, because basically the price changes are not caused by your activity, but by market activity... Long term holders should not check prices too often because it could affect their emotions in holding... target Long-term investments are time-based, so you may only need to monitor prices if you have free time...
Important or not, it just feels right to stay updated about the market and how it is doing, you need to be aware of the prices of certain cryptocurrencies that you might have on your watchlist for a potential investment you have been thinking about, and even if there is nothing of that sort, it still isn't easy to stay away from the market, especially if you have some money invested whether it is for short term or long term.
I don't know how many times a day I watch the market, there might be no purpose but after every now and then I reach out to my pocket, take out my mobile, and check the market only to stay updated about the prices because I like doing that, no obligations but still.
Staying on top of every information concerning the crypto market is indeed very important, especially for those who have an active investment, or those who are still aspiring to join an investment and are curious to know about the market.
One way to always make an informed choice and always update and adjust your strategy is by always keeping an eye on the price movements.
Although, even if one isn't actively investing it's actually normal to feel inquisitive about the market, especially when you've got interest in crypto investment.
The crypto market is volatile and highly unpredictable so staying updated about the market could really help us to make more informed choices.