First they are not fools because everyone has their own time to do what they like to do, if they can't buy now they can buy tomorrow. Besides not everyone knows the difference between Bitcoin and altcoins/shitcoins and they can't differenciat between Bitcoin and real estate investments if they don't know the meaning of crypto currency. Again, this is just a new ATH there is more to it, so anybody that's buying now should also put in mind that there are more ATH to come. It's only few people that won buy Bitcoin at this current rate because they think that this is all or it's too high for them to buy know. The stage Bitcoin is today, if you don't buy it will continue to increase so the easier you buy the more gains you get.