I believe that 99% percent of the guys here are checking the price at least once per day.
Why? Well there are several reasons for that.
1. Some people, who are still sitting n the sideline, would like to buy and wait for the right entry, which differs from person to person obviously.
2. People are already invested in Bitcoin or altcoins and want to see how it's performing. Some may want to take some profits or add more coins to their position.
3. Right now the market is mainly about trading and investing, so we are talking about the monetary aspect here. I know nobody who is not checking the price regularly. Even the devs do it, trust me. Some will admit it, others not so much.